CAPRELLA. 49 



AMPHIPODA. CAPRELLID^. 



ABERRANTIA. 



Genus— CAPRELLA. 



Caprella Lamarck, Hist, des Anim. sans Vert. p. 165. Leach, Linu. 



Tnxns. xi. p. 863. Milne Edwards, Hist, des Crust, iii. 



p. 105. KRiiYER, Nat. Tidssk. iv. p. 496. 

 Mgina. Kiioyer, Nat. Tidssk. iv. p. 509. 



Podalirius. Kkoyer, Nat. Tidssk. 2 Scr. i. p. 283. 



Generic character. Cephalon confluent with the first seg- 

 ment of the pereion. Pereion cylindrical, with the last two 

 segments shorter than the two preceding ; in the male the 

 first two segments are long, in the female they are shorter. 

 Pleon rudimentary. Appendages of the cephalon normal. 

 Guathopoda subchelate ; in the male the second pair of 

 gnathopoda articulates with the pereion near the middle or 

 posterior extremity of the second segment, in the female at 

 the anterior extremity of the same segment. First two pairs 

 of pereiopoda wanting. Three posterior pairs subequal, and 

 placed near to each other. One or two pairs of pleopoda rudi- 

 mentary, the rest obsolete. 



The head is confluent with the body. In the male the 

 first segment of the body is longer than in the female, 

 and the first pair of legs are always attached at the ante- 

 rior extremity. The second segment is longer in the male 

 than in the female, and we are strongly inclined to be- 

 lieve that it increases in length with the age of the 

 animal. The second pair of legs always articulate, in 

 the female, at the anterior extremity of this segment ; 

 whereas in the male they are afl[ixed farther back, and 

 generally posteriorly to the centre of the segment, and 



VOL. II. E 



