GAMMA KlILi:. 191 



This species bears a vor}' close resemblance to M. r/roasimanus, dif- 

 fering only in minute details. ^Ir. Stiinpson saj's that he has often 

 taken what he ])resumed were young in tlu^ Coralline zone. Ho 

 remarks that its motions aro more sluggish than is usual Avith Am- 

 phii)()ds, a circumstance in which it differs very considerably from the 

 European type of the genus. 



5. Moera Savii. 



Ganmianis Savii, JEdw. Ann. des Set. Nat. xx. p. 369 ; Hist, des Crust. 

 iii. p. 52. 



" Superior antenna; many times longer than the inferior ; peduncle 

 of the inferior many times longer than that of the superior. First 

 pair of gnathopoda much smaller than the second, and termi- 

 nating in a rudimentary dactylos. Second pair of gnathopoda 

 perfectly subcheliform, but small, and of nearly the same fonn as 

 in Garnmarus Locusta. The foiu'th segment of the pleon armed 

 posteriorly with a long spine, which advances upon the follo-\\ang 

 segment and occupies the median hne ; the other segments of the 

 pleon are perfectly smooth. The three posterior pairs of pleopoda 

 terminate equally ; the last also terminate in two short and strong 

 styliform rami. Telson, a small horizontal ? lamella. 



"Huh. The coast of Noirmoutier, Vendee." — M.-Edwards. 



The above description is that of M, -Edwards, but it does not agree 

 with many of the animals preserved in the bottle labelled G. Savii, 

 some of which resemble Mcera grossimaniis. A few sjjecimens had 

 the second pair of gnathopoda small, answering to the description of 

 the species. 



6. Mcera pocUlimanus, n. s. (Plate XXXIV. fig. 7.) B.M. 



Infero-posterior margin of the first and second segments of the pleon 

 slightly waved, of the third crenidated. Eyes reniform. Superior 

 antenna) half as long as the animal ; ilagellum as long as the pe- 

 duncle, articidi not longer than broad, secondary appendage rudi- 

 mentary. Inferior antennae ha\4ng the peduncle not reaching 

 beyond the second joint of the peduncle of the superior ; flagellum 

 scarcely a.s long as the last joint of the peduncle. First pair of 

 gnathopoda having the cai-pus as long and as broad as the pro- 

 podos : propodos on the right side ovate, inferior margin ciliated ; 

 palm obUque, not defined ; on the left side the palm is but little 

 oblique, waved, and defined by an obtuse angle : dactylos robust 

 and distinctly ung-uiculatc. Second pair of gnathopoda having 

 the caq)us vciy short ; propodos very long, and about half as 

 broad as long, superior and inferior margins parallel ; the infero- 

 anterior angle formed into a nearly circular hollow or cup, over 



