112 SIE. THOMAS SCOTT OK THE 



antennules are 9-jointed ; the first four joints are proportionally 

 rather shorter than those of S. gracilis. The posterior foot-jaw s 

 are larger than those of the form last described, but otherwise 

 they resemble them very closely. The first pair of swimming- 

 feet are also larger than those of the form referred to, and there 

 is a slight difference in their structure : the inner branches 

 have the tw^o short end-joints distinct, but the short end-joint 

 of the outer branches appears to be coalescent with tbe second, 

 so that the outer branches are thus apparently only 2-jointed. 

 The fifth pair (fig. 17) have tbe secondary joints broadly ovate, 

 and somewhat resemble those of Sarpacticus gracilis. 



This robust variety occurred chiefly in gatherings of Crustacea 

 collected in 2-4 fathoms, about fifty yards off West Point, Cape 

 riora, during June and July, 1897. 



Genus Zatjs, Goodsir, 1845. 



Zaus spinatus, Goodsir. 



1845. Zaus spinatus, Goodsir (33«), p. 326, pi. 11. figs. 1-8. 



This comparatively well-marked species was dredged at "West 

 Bay, Cape Tlora, in 2-10 fathoms, July 2nd, 1897 ; only a few 

 specimens were observed. Its British distribution extends from 

 the Scilly Islands to Shetland. 



G-enus Eupelte, Glaus, 1863. 



EuPELTE PURPUEOciNCTA {Norman). 



1868. Alteiitha purpurocincta,'NoTma.n (59), p. 298. 



This species occurred in the same gathering with Zaus spinatus 

 from West Bay, Cape Elora. It has sometimes been described 

 as an Alteutha, but Prof. Claus and others consider it to be 

 generically distinct. As a British species, it is to be found all 

 round our shores, but seldom in large numbers. Eupelte pur- 

 pur ocincta appeared to be rare in the Franz- Josef Land 

 gatherings. 



Genus Idta, PMlippi, 1843. 

 Idta rgRCATA (Baird). 



1837. Cg clops furcatus, Baird (1 a), p. 330, pi. 9. figs. 26-28. 

 A considerable number of specimens of Idya furcata were 



