1268 



CRUSTACEA. 



Daphnella ANGUSTA. 



Corpus laterdliter aut superne visum angustum, non tumidum, dorso 

 rectum. Caput discretum, vix oblongum, parce angustius. Antennce 

 lmce perbreves; 2dce corpore breviores, rarnis subcequis, rami unius 

 articulo 2do duplo longiore quam lmus, alterius articulo 2do breviore 

 quam dimidium lmi. Setae, abdominis dorsales dimidio corporis bre- 

 viores. 



Body narrow, whether seen from above or in profile, a little higher 

 posteriorly, not tumid, back straight. Head separated by a con- 

 striction, hardly oblong, a little less than the body in height. An- 

 terior antennae quite short ; posterior pair shorter than the body, 

 the branches subequal, the second joint of one branch twice as long 

 as the first joint, and second of the other branch half the first 

 joint of same. Dorsal setae of abdomen not half as long as the body. 



Plate 89, fig. 1 a, dorsal view, enlarged ; b, side view ; c, anterior 

 antennae; d, first pair of legs; e, fourth pair, magnified three-fourths 

 more than the figure of the animal; /, dorsal abdominal appendage. 



Fresh-water pools, Yanua Lebu, Feejee Islands. 



In a dorsal view, the head is short oval, and the eye is at the front 

 extremity ; the body behind is narrow oval or ovate, with the poste- 

 rior extremity truncate or slightly excavate. The minute anterior 

 antennae are seen in an upper view, either side of the head. In pro- 

 file, the eye is at the extremity of the front. Only the tips of the 

 caudal extremity project beyond the shell. The short spines at the 

 extremity of the abdomen are nearly straight, not a sixth of the 

 length of the animal. 



Genus PENILIA, Dana. 



Caput fere discretum, infra elongate rostratum et acutum. Antennm 

 posticce grandes, birameoe, ramis duobus 2-articuIatis. Abdomen non 

 inflexum, 2 stylis cornets elongatis confectum et extus non spinulosum. 



