CAPRELLLD^. 361 



antennfc rather stout, and t\rice as long as the inferior, wliich 

 are very slender. Propoda very long and rather broad, with two 

 or three teeth along the inner edge ; the gnathopoda to which they 

 belong are placed on the thickened posterior part of the second 

 segment. Colour light yellowish brown. Eyes red. 

 " Length ^ of an inch. 



** Hab. Grand Manan." — Stimpson. 



18. Caprella Stimpsoni. 



Caprella robusta, Stimpson, 3Iarine Invert. Grand Manan, p. 44 (not 

 I)and). 



"Tliis is a very large, thick and robust species, of an olivaceous or 

 often of a light-brown colour. There are numerous short spines 

 on the back, ver}- variable in size and niunber in different speci- 

 mens. The antenna) are not large, the upper being about half 

 the length of the body, and the lower nearly as long and very 

 hairy. Gnathopoda placed at about the middle of the second 

 segment, with the propodos having strong teeth on the lower edge 

 and a thick dactylos. 



"Length 1-25 inch. 



*' Hah. Dredged on a rocky bottom in 12 fathoms, back of Duck 

 Island Ledge, Grand Manan." — Stimpson. 



19. Caprella spinosissima. (Plate LVII. fig. 3.) 



^gina spiuosissinia, Stimpson, Marine Invert. Grand Manan, p. 45. 

 Caprella spinifera, Bell, Sir E. Belcher's Last of the Arctic Voyages, 

 p. 407. pi. 3o. f. 2. 



" Body slender, much thickened at the origins of the appendages, 

 covered everj-where on the back and sides with shai-p broad-based 

 spines, some of which are very long : these sometimes show a 

 tendency to arrangement in rows. There is one very strong spine 

 just above each branchial vesif'Te. The ^ephalon is large, with pro- 

 minent eyes. The inferior antennae aie verj- much more slender than 

 the superior, and the nuiuth parts weU-developcd ; the triarticulatc 

 appendage of the mandibles being small, but obvious. The second 

 pair of gnathopoda are placed at the thickening near the anterior 

 extremity of the second segment, and have two spines [teeth ?] on 

 the bases ; also two teeth on the propodos, one at its extremity, the 

 other on the inner edge, just reached by the curved dactylos when 

 closed. The posterior pereiopoda are highly developed, with their 

 subcheliform organs provided with a spine in the middle. Pleon 

 ver}' short, with a pair of posterior appendages which nearly equal 

 it in length. The ground-colour is either purplish or brownish. 



