LERNF.AP.K. 



LEKNEADjE. 



418 



aZti. Body abort, and rather tbiek. Head rounded ; antenna 

 abort, Md rather bnd ; ck u~w, .bort Thorpe carrying on the 

 Oder .urfac. two pun of small appendage*. each coMirting of three 

 We** or nnger,aiid furnished laterally with throe pur. of longer 

 prok>otioorof many divisions, the terminal one on etch side larger 

 than the othen, and crabnu-ing the oriferoni HOI ; the upper part of 

 the thorax u covered with short, conical, aharp-pointed ipine*. 

 n rudimentary. Oriferotu aaot flattened, containing many 



"nTlTfound adhering to the gill* of the Zvufaber. 



Oenu 2. 



Footjaw* and thoracic appendage* u in Ckmdraeantkta. OviferouB 

 tuboi long, either club^haped and stout or alender and twisting. 



1. L. ron.M/a. Female: Head oral, rather elongated; antenna- 

 Battened, of cooaiderable rite, and projecting. Thorax elongated, 

 club-shaped ; anterior portion narrow for about a third of it* length, 

 the other two-thirda much broader, and terminating posteriorly in two 

 aharp lateral tubercle* of moderate length, and a middle one repre- 

 senting the abdomen, which U nearly quite rudimentary. Two pairs 

 onlyof thoracic appendage* are vuible, occurring at the upper portion 

 of the narrow part, each divided into two digitations, and situated 

 at a abort distance from each other. The oviforoua saoa are of con- 

 siderable riae, cylindrical, and about two-thirda the length of the body. 

 Length nearly 3 line*. 



Male : Somewhat pyriform in shape. Head very large, swollen. 

 Thorax conical, divided into five segments, and terminated by a nidi- 

 mentary abdomen armed with two small hooka. Antenna slender, 

 etaceoue, projecting from the anterior extremity of the head, and 

 underneath them a pair of hook-shaped foot-jaws. Mouth situated 

 far hack, and provided with mandibles ; and behind the mouth two 



pair* of foot-jaws are visible. Following these we observe two 

 pairs of letiferous tubercle* representing the feet Length, a quarter 

 of aline. 



It i* found on the branch!*; of a sole. 



S. L. atelliiia. Female : Body somewhat square-shaped. Head 

 null, and situated at the end of a long and slender neck ; it is 

 rounded at the anterior extremity, and a little below the antenna) 

 exhibit* on each tide a round lobe or tubercle. The antenna) and 

 loot-jaw* are very small The neck nearly equals in length the rest 

 of the body. The thorax is broad, and of a somewhat quadrangular 

 shape, with a deep indentation on each side about the middle of ita 

 length. On the upper half we see two pairs of prolongations or 

 appendage*, each divided into three digitatiom; and on the lower 

 half there are three smaller appendages, but simple, not digitated. 

 The posterior angle* of the thorax are prolonged also into short horns 

 or appendage*, which are also simple. The abdomen is in form of a 

 abort tubercle, with a rounded blunt point The oviferoua sacs are 

 of about the length of the whole animal, of considerable size, and 

 cylindrical 



The male i* nmiUr, according to Milne-Edwards, to that of 

 Cktmdncmiilk*! (Ltntnloma) conm/M. 



It i* band attached to the branchuc of the Trigla. 



S. L. Ltfkii. Female : Body rather elongate, and somewhat 

 Head small, having on each aide a small horn-shaped 

 ge directed a little obliquely backward*. Antenna) small, 

 and slightly curved. Thorax divided into four portions by a* 

 contraction*. The first narrow like a neck, having on the upper 



; 



abort spine, and on the under surface a pair of appendages 

 or prolongation* of two divisions or digitations ; the second U some- 

 what quadrilateral, with on the middle line of the back two conical 

 tubercle* and on the (idea two others, the upper pair the longer, and 

 having on the under surface a pair of appendage* of two digitations , 

 the third part i* larger than the preceding, and has the same tubercles 

 and prolongation*, and in addition a small spine on the superior 

 portion, and in the me*ial line of the under surface; the fourth 

 portion i* rather the Urgrst, with two horns or tubercles on the 

 arbor, a third on the median line of the under surface, anc 

 ch lid* a long termini " 

 in form of a abort tubercle i 

 thorax. Ovifmm* tube* 

 6J HIM.; breadth, 3| tinea. 



The owl* is very similar to that of the Ok 

 alrmdy d*crib*d. 



rd on tiie median line of tue under surface, and 



terminal prolongation, rather blunt Abdomen 



liberals in the centre of the posterior part of the 



tabs* very long, slender, and twisted. Length, 



Tribe IL Antkoraairpaeta. 



Attached to their pray by means of two long appendage* which 

 art** from the thorax. They unite together either at the base or near 

 the Up only, and terminate there in a munded knob like a button, by 

 means of which the animal maintains it* hold of the part to which i 

 ha* attached iUrlf. No thoracic feet, or they are represented by these 

 TO-abaped appendage*. 



1UU* in general differ very much in appearance from the female*, 



Family I. LerneopodacUr. 



Ami-shaped appendages long, wide apart from each other at their 

 Mse, and united only at the tip. 



Genus 



Female. Body generally elongated, oval. Head short and thick. 

 'wo pairs of foot-jaws, well-developed, and placed near each other. 

 External ovaries of moderate length and cylindrical. 



V ;! |V..|v ilnM'il bate tWO M-'irly MOB! p 'i ''.- ''< "t" :m nv..i.l 

 hape; one representing the head, the other the thorax. Much 

 mailer than the female. 



1. L. clongala. The head is very distinct, of a horny texture, 

 ivate, depressed, broad at the base, and obtusely pointed in front, 

 resembling very much the shape of the body of the common Spider- 

 Crab. The second pair of foot-jaws is large and well developed, 



miniating of a large rounded oval basal joint, and a more slender 

 .urved hooked terminal one, with a pretty strong tooth on its inner 

 idge. The head is united to the body by a short narrow neck ; the 

 horax is long and narrow, of a somewhat club-shaped form, and 

 ;ives origin to two long cylindrical arms, which considerably t-x 

 he length of the body. At the posterior portion, which is somewhat 



truncate, we see two small lobes ; and on each side of these spring 

 he ovaries, which are about the length of the entire body, thick, 

 itruight, and cylindrical. 

 Length of whole animal nearly 3 inches. Head, one line and three- 



quarters. Body, 74 lines. Arms, one inch and one line. Ovaries, one 

 nch and one line and a halt 



A specimen of this arctic species was found attached to the eye of 

 shark caught on the English coast, and brought to London in the 



winter of 1848. 



2. L. galei. Female : The head is oval, depressed, and of a hard 

 lorny substance ; the thorax is long, rather slender, and somewhat 

 cylindrical, narrow where it U attached to the head, and broadest at 



ts posterior extremity. The arms are slender, and nearly the length 

 of the thorax. At the posterior extremity of the boHy are two small 

 obes, between which, on the middle line, is a small tubercle repre- 

 senting the abdomen. Ovarian tubes of moderate length, not quite 

 equal to the length of the thorax. 



Length of the whole body, including arms, about three-fourths of 

 an inch. 



Male: Body divided into two portions, of an ovoid form, and 

 nearly of equal size ; the upper half represents the head, and carries 

 a pair of antenna;, and two pairs of foot-jaws of considerable magni- 

 tude ; the lower half, representing the thorax, has at its posterior 

 extremity two sub-globular appendagea a little longer than those in 

 the female. 



The female was found attached to the cavity posterior to the vent 

 of the Squaltu galttu. 



8. L. talmoiua. Linntoua's description of this species, as far an it 

 goes, is very good : " Body ovate ; thorax obcordate ; the two arms 

 linear, approximated." The head ia rather small, somewhat bulging 

 out at the back part, broader there, and rather sharp-pointed at the 

 anterior extremity. From the base of the head spring the two arms, 

 which are rounded, and slightly shorter than the body. The thorax 

 is pyriform and short, and at its lower extremity we see two minute. 

 eminences. The ovarian tubes are of considerable thickness, cylin- 

 drical, and about the same length as the whole animal. 



The colour of the animal is white. Length about half an inch. 



It is found in the gills of the Salmon, in the London market*. 



Family II. Andtonlt 



Arm-shaped appendage* very short, and united to each other from 

 the base, so as to resemble a single organ. 



Genus Ancliorelia. 



Female : Body in general abort, and somewhat swollen. Head 

 small, and situated at the extremity of a long neck, which is generally 

 curved backwards. Two pairs of foot-jaws well developed, and a . 

 third rudimentary. Antenna; rudimentary. Ovarian tubes of mode- 

 rate length, and cylindrical. 



The male differ* in appearance very much from the female, ami ia 

 very small 



I. A. uncinala. Female: The body of the animal is thick, 

 oblong, of a milk-white colour, smooth, and opaque. Head very 

 small, situated at the extremity of a long slender neck, which has a 

 wrinkled appearance, and is nearly the length of the thorax. The 

 arm* spring from the upper portion of the thorax, and are rather 

 short, terminating iu a rounded knob or button. At the posterior 

 portion of the thorax there is on the middle line a small protuberance 

 representing the abdomen. The ovarian tubes are cylindrical, 

 straight, smooth, ami about the length of the body. Length from 

 6 to 8 lines. 



Male: Body globular, terminated in front by a small conical 

 eminence, at the extremity of whjch is the mouth, and having at it* 

 baae one pair of rudimentary appendages, and a pair of rudimentary 

 foot-jaws. On the middle of the body, on the inferior surface, thero 



