160 GAMMA RIM. 



AMPHIPODA. PHOXIDES. 



NATATORY A. 



CEDICEROS. 



(Ediceros. KROYER, Tidskr. iv. p. 155 (1842-3). 



(Edicerus. DANA, TT. S. Explor. Expecl. p. 933. SPENCE BATE, Cat. Amph. 

 Brit. Mus. p. 103. 



Cephalon produced anteriorly. Eyes confluent. Superior 

 antennae without a secondary appendage. Gnathopoda sub- 

 chelate. Posterior pair of pereiopoda very long and slender. 



THE head is produced and depressed anteriorly. The 

 eyes are confluent, and situated before the antennae. 

 The upper antennae are without a secondary appendage. 

 The arms are subchelate : the first pair are a little longer 

 than the second. " The first two pairs of walking legs 

 are strong, and the last pair is very long and slender, 

 almost filiform." (Kroyer.) 



The only specimen of this genus that we have seen 

 is imperfect ; we, therefore, can only assume that the 

 absent parts, like those present, correspond generically 

 with the description given by Kroyer. In our specimen 

 the eyes are visible, whereas Kroyer describes the ani- 

 mal as having none, but marks the assertion with a 

 doubt. 



This genus is in very close connection with West- 

 woodilla, from which it appears to differ only in having 

 the second pair of gnathopoda subchelate. 



It is to us a question of some doubt whether the 

 species described by Dana belong to this genus. They 

 certainly differ in the absence of the prolonged rostrum, 

 and in the possession of two distinct lateral eyes. 



