1-1'^ AMPllIPODA NORM.VLIA. 



I'onii, fiu h pair luiviiig the coxii produced anteriorly and infcriorly to 

 a point ; carpus nearly as long as the propodos ; propodos gradually 

 increasing in breadth to the palm ; palm scarcely oblique, fringed 

 with short spines, and near the inferior angle with longer ones. 

 Pereiopoda suboqual : first pair of pereiopoda ha\'ing the coxa 

 produced infcriorly into one tooth, the second pair into two ; the 

 third have the anterior di\-ision developed into a tooth, and the pos- 

 terior rounded, having the tooth near the centre ; the coxaj of the 

 two posterior pairs are similarly formed, and each of the last three 

 has the bases posteriorly emarginate and furnished with a tooth 

 near the upper and lower posterior extremities. Fourth and sixth 

 pair.s of pleopoda extending to nearly the same length, the interme- 

 diate one being much shorter. Telson subacute, lanceolate. The 

 eyes are stated by Sir James Koss to be white. The integument is 

 covered all over with minute semicii'cular scales. 

 Length about 1 inch. 



Hah. Greenland, where it lives on Asterias rugens {Holholl, MS. 

 B.M.); Felix Harbour and Igoolik (Sir James Boss, CoUeetion in Mus. 

 Roy. CoU. Surg.). Mr. A. \Miite has received it from "VVolstenholme 

 Sound from Mr. Ede. 



42. CALLIOPE. 



Calliope, Leach, 3IS. Brit. Miis. 



Spcnce Bate, Report Brit. Assoc. 1855 ; Ann. Nat. Hist. Feb. 1857. 

 niiite, Hist. Brit. Crust, p. 179. 



Superior antennae without a secondary appendage. Mandibles fur- 

 nished with an appendage. Gnathopoda ha^•ing the propoda in the 

 second or both pairs largely developed, and the carpi inferiorly 

 produced. Telson not divided. 



Although, in appearance, the tj^pe of this genus is very distinct 

 from that of Atijlus and Acanthosoma, I tliink the species will be 

 found gradually to run one into the other. In Atylus HuxUyanus 

 the telson is scarcely more than emarginate ; and the only reliable 

 distinction exists in the gnathopoda of Calliope being stronger and 

 more powerful organs than in the other two genera. The arrange- 

 ment may be convenient, but the grouping is scarcely natiu'al. 



1. Calliope IsBviusciila. (Plate XXVIII. fig. 2.) B.M. 



Amphithoe beviuscula, Kroyer, Gran. Amfip. p. 53. t. 3. f. 13. 



Hdto. Hist, des Crust, t. iii. p. 30. 



Bell, Apjjend. to Belcher's Last of the Arctic Voyayes, p. 405. 

 Calliope Leachii, Spence Bate, Brit. A.^soc. Report, 1855 : Ann. Nat. 

 Hist. Feb. 1857. 



White, Hist. Brit. Crust, p. 170. 



Cephalon furnished with a very minute rostrum, curved down between 

 the superior antennse, Thx'ee anterior segments of the pleon dor- 



