32 Carl Bovallius, 



The body is very broad. 



The head is globuhir, tumid. 



The eyes are large, but imperfectly developed. 



The first pair of antennae with a multi-articulate flagelluin; the 

 first joint of the flagellum very long, beset with long hairs. 



The two first pairs of pereiopoda are simple, not suboheliform; the 

 two succeeding pairs with the tibia very long, lamelliform; the last pair 

 transformed, filiform. 



The last pair of uropoda with lanceolate rami. 



The telson is minute. 



Only one species is known. 



1. Hyperiopsis Yoeringii. G. 0. SARS, 1885. 



(IM. II, fig-. 40, copied from G. O. Sars.) 



Syu. 1885. Hyperiopsis Voeringii. G. 0. SARS. The Norwegian Nortli Atlantic Expe- 

 dition 1876 — 1878. Zoology. Crusta- 

 cea, I, p. 231. Fol. 

 Diagn. Corpus Iseve. 



Caput margine anterioro arcuato, tuberculo parvo supra bases antennaruni 



primi paris instrncto. 

 AHtonufP primi paris flagcllo XII— Xlll-articiilato, articiilo primo sequentibus 



breviore. Flagellum secundarium quattuor-articulatum. 

 Tibia? parium tertii ct (piarti prd/im pereii valde elougatre, dilatatje, renii- 



formcs. 

 Epimera segmentonun (pinttuor priorum magna, subfequalia. 

 Kami paris ultimi pcfbint iiri pedunculo lougitudiue a^quales. 



The body is smooth. 



The head with the anterior margin evenly arched, with a sliglit 

 tubercular projection over the base of the first pair of antenna^. 



The first pair of antennae with a 12— 13-articulatcd flagellum; the 

 first joint shorter tliaii the following together. The secondary flagel- 

 lum is four-jointed. 



The tibiae of the third and fourth pairs of iiereiopoda are very 

 elongate, dilated, oar-shaped. 



The epimerals of the first four poreional segments are large, 

 subequal. 



The rami of the last j^air of uropoda equal the length of the 

 peduncle. 



