SIPHONCECETES WHITEI. 
467 
A MPHIPODA . P 0 DOCERJDES. 
NATATORIA. 
Specific character. Superior antennae having the peduncle but little 
longer than the cephalon ; the flagellum short, and apparently exarticulate. 
Inferior antennae Gnathopoda with the carpi and propoda 
continuously long-ovate; dactylos of the second pair serrated. First two 
pairs of pereiopoda having the dactyla straight. 
Length 2 4 5 inch. 
Cerapus Whitei. Gosse, Nat. Rambles, Devonshire, p. 383. 
pi. xxii. fig. 12. Mar. Zool. p. 140, f. 253. 
White, Brit. Crust, p. 191. 
Siphoncecetus Whitei. Spence Bate, Cat. Amph. Brit. Mus. p. 270, 
pi. xlv. fig. 10. 
Siphoncecetus Kroyeranus. Spence Bate, Ann. Nat. Hist. 2 ser. xix. 
p. 149. White, Hist. Brit. Crust, p. 196. 
Our knowledge of this species is limited. The 
specimen which we examined, and originally described 
as S. Kroyeranus , has the superior antennae shorter 
than either the figures of Kioyer or of Gosse ; we 
have, nevertheless, associated both under one name, 
and it is not improbable that they may prove to be 
females of S. typicus. The almost exarticulate flagellum 
of the upper antennae, and the more strongly armed 
second pair of hands, may, possibly, be characteristics 
of the female sex, but until more specimens are obtained 
