27S AMPniPODA NORMALIA. 



the length and size of the others ; dactylos strongly serrated upon 

 the inner margin. Three posterior pairs of pereiopoda subetjual, 

 the propodos having the inner distal angle produced to a lobe; 

 dactylos robust, arcuate. Fourth pair of pleopoda having the 

 outer ramus longer than the inner ; last pair scarcely reaching 

 beyond the telson. Telson almost circular, having a slight point 

 at the apex. 

 Length ^tlis of an inch. 



Hah. Weymouth (Gosse). 



The above description is taken from a female presented to me by 

 Mr. Gosse. 



11. UNCIOLA. 



Unciola, Sat/, Juitrn. Acad. Nat. Sci. Phihul. i. p. 389. 



Edwards, Ann. des Sc. Nat. xx. p. 383 ; Hist, des Cnisf. iii. p. G9. 

 Glauconome, Kroyer, Nat. Tidsh: i. p. 501. 



" Cephalon deeply cmarginate beneath the eyes to receive the basal 

 joints of the inferior antenna?, and projecting into an acute angle 

 between the superior antennie. Eyes slightly prominent, placed 

 on a somewhat advanced portion of the cephalon, between the 

 bases of the superior and inferior antennoB. Antennae robust, 

 subpediform ; superior pair having an articulated flageUum and a 

 secondary appendage ; inferior pair shorter. Coxce not dilated. 

 First pail' of g-nathopoda large, monodactyle ; second pair adactyle, 

 having the carpus and propodos subequal. Posterior paii' of 

 pereiopoda longest. Antepenultimate and penultimate pairs of 

 pleopoda stjliform ; ultimate pair* suborbicular, terminating with 

 a pair of simple, depressed, styliform rami*." — Condensed from 



*' Antennae subpedifoiTQ ; superior paii" furnished with a very small 

 secondary appendage. Eyes minute, not very distinct. Fii-st pair 

 of gnathopoda subcheliform ; second pair more slender, not sub- 

 chelate. First and second pairs of pcrcioiDoda veiy slender ; thii'd, 

 fourth and fifth slender, with the basa dilated. Three anterior 

 pail's of pleopoda short, but very robust, formed for swimming, 

 the foiu'th and fifth paii'S for leaping, the sixth pair (nearly 

 rudimentary) for swimming. Coxae veiy minute, almost nidi- 

 mentary." — Abbreviated from Kroyer, 



I think there can be little doubt that Ki'oyer's genus Glauconome 

 is synonymous with Unciola of Say. which is also the opinion of 

 Dana ; but not ha%'ing seen an authenticated specimen of this genus, 



* Say's description is : " terminal one suborbicular, with a pair of simple, de- 

 pressed styles, concealed by others." 



