coRorniiDiE, 279 



I have tlioupht it luh-isablc to givo tlio clesoription hy l)oth authors, 

 the luoix' Lspceially as, from the iiuleiiuiteiiess of tlie tenu ' udactylG ' 

 of Say, and no reforenco being made by cither of them to the foi-m 

 of the telson, it is not improbable that this genus may also be 

 synonymous with Mierodcntojnts. 



1. Unciola iiTorata. 



I'nc'iola in'ovata, Sai/, Jonrn. Acad. Nut. Sci. Philad. i. p. 389. 



Edwards, Ann. des Sc. Nat. xx. p. 383; Ilist. des Crust, iii. p. G9. 



" HuNing each segment of the pleon mucronate upon each side behind. 

 Eyes hemispherical, prominent. Superior antenna) haWng the 

 secondary appendage reaching the fifth arti cuius of the flagellum. 

 First pair of gnathopoda having the propodas with a longitudi- 

 nally convex palm defined by a prominent obtuse tooth ; dac- 

 tylos reaching the carpus, which terminates so as to appear like a ' 

 second tooth of the hand. Second pair of giiathopodu compressed, 

 ciliated, having the propodos sub triangular. Colour, when recent, 

 pale, with very numerous red points. 



" Length ^ths of an inch. 



"Hah. Egg Harbour, coast of the United States." — Condensed 

 from Say. 



2. TJnciola leucopes. (Plate XLVII. fig. 3.) 



Glauconome leucopes, Krotjer, Nat. Tidskr. i. p. 491 et seq. pi. 7. f. 2 ; 

 Voya(je en Scand. pi. 19. f. 1 a. 



Eyes small. Superior antennae nearly half the length of the animal ; 

 joints of the peduncle subcqual, the fii'st as long as the cephalon. 

 Inferior antcnnse shorter than the superior, having the peduncle 

 as long as the peduncle of the superior ; flagellum as long as the 

 last joint of the peduncle. First pair of gnathopoda having the 

 l)ropodos ovate, tapering, palm imperfectly defined ; ductylos long. 

 Second pair of gnathopoda having the propodos long, not broader 

 than the carpus. 

 Hah. South Greenland (Kroyer). 



12. COROPHIUM. 



Corophiuin, iMtr. Gen. Crust, i. p. r)8. 



Leach, Edinh. Encycl. vii. p. 403 ; Linn. Trans, xi. p. 3G2. 

 Dcsmarcst, Consid. sur h'S Crust, p. 270. 

 (iosse, Marine Zool. i. p. 141. 

 Bruzeliu,s, Skand. Ainph. Gamm. p. 14. 



Superior antennae small, situated close together in advance of and 

 above the inferior, having a multiarticulate ilagclluin. liilerior 

 anteunic very large and powerful, subpediforni : llagellum not 



