?90 GAMMARID.E. 



tooth-like process. The hand is large, but neither so 

 broad or long as the wrist ; the palm is rounded but not 

 defined ; and the finger is distinctly serrated upon the 

 inner margin. The second pair of legs have the wrist 

 and hand but slightly dilated : the palm is rounded off, 

 imperfectly defined, and furnisbed with a few hairs. 

 The finger, like that of the preceding pair, is serrated 

 upon the inner margin. In the last three pairs of legs 

 the thighs are less developed than ordinarily, the last 

 pair of legs are but moderately prolonged. The three 

 pairs of caudal appendages extend to nearly the same 

 length, and consequently have the peduncles and their 

 branches gradually decreasing in their relative lengths 

 successively. The terminal tail-piece is furnished near 

 the apex with one or two long, somewhat peculiarly 

 formed hairs, and also one or more short plumose cilia. 



Under the microscope the skin is seen to be covered 

 by numerous minute points as in the vignette at *. 



This species was first found by our friend the late Mr. 

 Howard Stewart, Sub-Curator of the Hunterian Museum 

 of the Royal College of Surgeons, under the Hoe, 

 Plymouth, in a sponge. Mr. Loughrin has also sent us 

 specimens from Polperro. It has also been dredged from 

 seventy to ninety fathoms of water, sixty miles east of 

 the Shetland Islands ; and Costa took his animals, which 

 we consider to be identical with our specimens, at Naples: 

 it has therefore been necessary to sink the name of 

 Lembos Damnoniensis, as first proposed, for the older 

 name of Costa. Among the specimens which we have 

 received were some without any tooth upon the carpus 

 of the anterior pair of gnathopoda — these may possibly 

 be females. 



