102 



AJirUIPODA NOllMALIA. 



and second i)airs reaching backwards beyond the third ; branches 

 of first pair ha\ing five rather distinct sotco above. 

 " Length 3 lines. 



" Hah. Puget's Sound."— Z>«n«. 



19. WESTWOODILLA. 



Westwoodirt, Spence Bate, Brit. Assoc. RipoH, 1855; Synops. Ann. 

 Nat. Hist. Feb. 1857. 



Cephalon produced, depressed. Eyes united. Superior antennae 

 without appendage. Mandibles appendiculated. First pair of 

 gnathopoda subchclatc, second not subchelate. Posterior pair of 

 pcreiopoda much longer than the preceding ; dactylos long, straight, 

 and styliform. Posterior pair of pleopoda biramous. Telson 

 squamiform. 



Westivoodia having been already adopted by Dana for a genus of 

 Entomostracous Crustacea, I have felt obliged to alter the termination 

 of the name of this genus, which I have designated in honoiu' of one 

 of the most eminent of European entomologists. 



1. Westwoodilla caecula. (Plate XVT. fig. 5.) 



Westwoodia cjecula, S^wnce Bate, Brit. Assoc. Bepm-t, 1855 ; Si/nops. 

 Anji. Nat. Hist. Feb. 1857. 



Wliite, Hist. Brit. Crust, p. 172. 



Eyes converging into a single organ, situated above and in advance 

 of the superior antcnnse. Superior antennae having the peduncle 

 as long again as the flagellum. Inferior antenna? scarcely longer 

 than the superior, having the peduncle as long ag-ain as the flagel- 

 lum. Mandibles having the incisive margin edentulous; secondaiy 

 plate similar. First pair of gnathopoda having the propodos long 

 ovate, narrow ; palm nearly the length of the inferior margin, 

 fringed "with cilia; carpus having the inferior distal angle pro- 

 diiced. Second pair of gnathopoda having the distal half of the 

 superior margin forming an obtuse angle with the anterior half, 

 and supplied -with a thick brush of hairs. Two anterior pairs of 

 pereiopoda small, short, having a long, sHghtly ciu'ved dactylos. 

 Coxse of the third pair of pcreiopoda unequally divided ; anterior 

 lobe nearly as deep as the preceding coxa?. Fifth pair of pereiopoda 

 one-third as long again as the fourth. Posterior pair of pleopoda 

 having the rami lanceolate. Telson concave above, roiuid at the 

 extremity. 



Length ^ths of an inch. 



Hah. Moray Frith {Rev. G. Gordon); Banfl", Mr. Edward. At 

 Plymouth" I have found it among trawl -refuse. 



