744 



CRUSTACEA. 



Family ASELLID^E. 



Subfamily ASELLIK3E. 



Genus J^ERA. 



J^ERA PUBESCENS. 



Corpus elongato-eUipticum, pubescens, antice truncatum, medio fronte 

 apiculatum. Oculi parvuli, remoti. Caput segmento sequente longius. 

 Abdomen rotundato-ovatum, prope basin suturd obsoletd notatum. 

 Styli caudales dimidii abdominis longitudine. Pedes subeequi. An- 

 tennae interna^ basi externarum paulo breviores ; externa? dimidio cor- 

 poris longiores, flagello tenuissimo, duplo longiore quam basis. 



Body oblong-elliptic, pubescent, truncate in front and apiculate at 

 middle. Eyes quite small, remote. Head longer than next seg- 

 ment. Abdomen round-ovate; an indistinct suture near base. 

 Caudal stylets half as long as abdomen, three or four-jointed. Feet 

 subequal, apex prolonged beyond the claws. Inner antennae shorter 

 than base of outer; outer longer than half the body; flagellum twice 

 longer than basal portion, very slender. 



Plate 49, fig. 9 a, animal, enlarged ; b, part of flagellum of outer 

 antennae ; c, extremity of leg ; d, abdomen in outline. 



From Nassau Bay, Tierra del Fuego, found parasitic on the large 

 common Spheroma, S. lanceolata. 



Length, one line. The greatest breadth of the body is nearly twice 

 that of the head; head but slightly narrower than first thoracic seg- 

 ment ; length of head about half its breadth. Base of outer antennae 

 as long as breadth of head, four-jointed, fourth joint scarcely longer 

 than the third. Thoracic segments gradually shorter from the fourth 

 to the last, and the last not half the length of the fourth. The 

 stylets are largish at base. 



