(YAM US CRT I. 



85 



AMPHIPODA. 



ABEREANTLI. 



GYAMIDJE. 







d 



CYAMUS CETI. 



The Whale Louse. 



Specific character. Body depressed, elliptical, segments gaping at the 

 sides (male narrower?). Third and fourth segments of the body with one 

 long branchia on each side ; armed it the base with two short appendages ; 

 second pair of hands armed beneath with two obtuse teeth, between which 

 is a lunate incision. 



Length nearly half an inch. 



Pediculu.s Ceti. 



MARTENS, Voy. Spitzbergen, viii. tab. ix. f D (1671). 

 LINN^US, Fauna Suecica, p. 499, No. 2056 (Oms- 

 cus C.). Syst. Nat. ii. p. 1060. SEBA, Thesaurus, 

 t. i. pi. xc. fig. 5. PALLAS, Spicilegia Zool. fasc. 9, 

 pi. iv. fig. 14, A B c. DE GEER, Mem. t. vii. 

 pi. xlii. figs. 6, 7 (Squille de la aleine). FABRICITTS, 

 Ent. Syst. Suppl. p. 570 (Pycnoyonum C.}. 

 LAMAKCK, Syst. Ann. s. Vertebr. p. 166 (Cyamus C.). 

 MULLER, Zool. Dan. iii. pi. cxix. figs. 13-17 



