.\i-.\i.i--.rn. K. 



rn.v: 



]tliivi:i.- think* that it bean much n-eemblanoe to the lat speottt of 



9. AlcynSf. 



Body Rdatinotu, transparent, vertical, cylindrical, with eight 

 riliatrd rilw, hidden in part under the vertical natatory lobe*. Aper- 

 ture provided with four ciliated appendage*. 



Example. AlewMe rrrmiculala, Hang, who established the genus. 

 Locality, coasts of Brant 



10. Crttum. 



Body gelatinous, free, regular, very short, but extended or prolonged 

 on each aide into a long riband-like appendage, bordered on each 

 angle with a series of vibratory cilia, thus forming four ambulacra, 



i each nide. Mouth inferior and megial, accompanied by a pair 

 . ! !>-'. ciliferous, retractile and Hiniple appendages. 

 Example, Crttum Vcnrrit, Lesueur. 



Although there is not much 

 resemblance- between this singular 

 genus and the typical forma of 

 ( 'iliograda, yet they are connected 

 by a succession of intermediate 

 links. If we refer to the genus 

 . we shall find that its 

 globular body is so extended 

 laterally aa to have a wing-like 

 ap]>eudage on either side. In 

 other genera these lateral ap- 

 pendages are still more extended, 

 until the globular body in the 

 centre is entirely lost The ali- 

 mentary canal of Crttum runs 

 across the middle of its length, 

 and from it extends, aa from the 

 stomach of the Medtua, a series 

 of gastric canals which carry the 

 nutriment to nil parts of the body. 



The third order is the CIBRHI- 

 ORADA. Theyare thus called fV..m 

 the cirrhi wITich are attached to 

 the disk upon which their organs 

 are disposed. These cirrhi are, 

 some of them, tubular, and are 

 furnished with suckers. The 

 ccccal appendages are attached 

 to their base, in which are pro- 

 duced the ova, which pass out at 

 the mouth of the cirrhi. The 

 following is De I'.lainville's defi- 

 nition of the order : 



Body, oral or circular, gela- 

 tinous, sustained in the interior 

 of the dorsal disk by a solid mib- 

 liiginous part, and provided 

 on the lower surface of the disk 

 with tentaculiforni cirrhi, which 

 are very extensible. 

 Genera. 

 1. VdtUa. 



Body membranous, oval, very 

 much depressed, convex, swollen, 

 sustained above by a transparent 

 oval Bubcartilaginoua piece, 

 marked with concentric stria:, and 

 surmounted by a vertical and 

 i 1 ilique crest, concave below, with 



a sort of mesial nucleus, offering a central mouth at the extremity 

 a prolxwcidiform prolongation, surrounded by tentacular cirrhi of 



a, upper ride ; i, lower ld*. 



of 



two kinds, the external being much longer than the internal ones. 



De Bl&inville observes that Imperato and Coluinna would appear to 

 be the authors who first noticed the animals which coii 

 genus, established, at first, under th 



Browne, and figured by him in his 'History of Jamaica,' tab/48. >'/ 1. 

 Forskahl, who gave a very good description ..f it, arranged it un.J 

 genus lluliith aria. Ixcfling made it a Medtua, denominating the speciee 

 known to him Mtdtua \ettUa, a name adopted by Luuueus in the 

 'Systema Natune.' Dana ('Soc. Il..y. d. Tin-in,' f?M) proposed the 

 imma of ArmfHidariu tor it ; and Lamarck published it undcrthcj 

 appellation of VrUln. by w l.ich it is now generally known to naturalist*. 

 This form is widely diffused, and has been found in the sea* of 

 Europe, America, Asia, and Australasia. One of the species, I', limbota, 

 is often taken on the southern coasts of England. The animals are met 

 with far at sea, and often huddled together, young and old, in con- 

 siderable masse*. Sailors are said to fry and eat them. 



The I'hyllid'ier labrit nrruleii, the Nolly-Man of Browne, appears to 

 be the VdtUa eyanea, of Lesson and Garnot, and one at 1. .-. - of the 

 species which gave rise to the Miduta VeleOa of Linnxus and (imclin 

 (Lamarck <]uotes the last name as well as Brown. './, aa 



nynonyms of his Vdella muti 



2. Raiaria. 



Body oval or circular, sustained by a subcartilaginous, compressed, 

 elevated piece, with a muscular, moveablc, longitudinal 



:i the 



middle with a frc. lifonn 



stomach, and with a \v of 



marginal telitaonlifoni. 



liKcholtz established this genus 



y small eirrhigra- 1 



whose back is sustained by a tml>car- 



. If in 



the dorsal cavity, and which only offer 

 marginal cirrhi on the central surface. 

 Bataria mitrala, highly magnified. l )l < Blainville. M'lcr oKvrvnii; that 



EabJ has figured with h 



tpiraiu (YdtUa Hmbota of Lamarck) son which 



M. Eschscholtz himself regards as closely approximating t 

 Itnlaria cordala, says that it s, 1 !. that th uy bo 



only degrees of development 'uta. 



S. ]' 



Body membranous, regular, < Dressed, slightlyconvox above; 



internal cartilaginous support circular, with its surface marked I 



face by a delicate 

 membrane merely. 



below, anil the infe- 

 rior sin 



nished with a great 

 number 

 of whicii 



ones are the longest, 

 and furnished with 



i by a glo- 

 bule : theysonietimcs 



ml the 



are the 



shortest, the most 

 Dimple, and the most 

 fleshy. In 1 1 

 of these teutneula is 

 the mouth, in form of 



I, _--S^ n "niall proboscis, 



which leads to a 

 .- imple stomach, sur- 

 rounded by a some- 

 what glandular sub- 



, from whom 



agreat, portion of th 

 "i in 

 the 



lut edition of tho 

 mid,' that 

 U lint one 



' .'/' 

 < iful 

 D the 



'an, and 



other \\aiini-i- seas. 

 nek, who esta- 

 blished the genus 

 for an animal which 

 had been placed among the Mcdiua; by Linmcus, gi -. .-eies; 



Porpila gignnlra. 

 a, upper nidc j b, lower fide. 



