246 



THETIS SCIENTIFIC RESULTS. 



Second to seventh pairs of legs very similar. The fifth pair of 

 legs has the second to the fourth joints proportionately like 

 those of the first, except that they are more slender, and the 

 ischium has a stout seta on the superior angles, and two instead 

 of three spines on the inferior border. 



Carpus a little shorter than the ischium, and much shorter 

 than the propodus ; the latter joint bears three spines on the 

 lower border and the former two ; the 

 distal extremities of the joints frequently 

 bear one or more plumose setse. 



Inner ramus of first pair of pleopods 

 elongate and subtriangular. Outer 

 ramus narrowly obovate. Rami of suc- 

 ceeding three pairs slightly larger and 

 broader. The inner rami of the second 

 pair are each furnished with a fusiform 

 stylet, about one-third longer than the 

 ramus. 



Uropods rather small, arising from 

 bracket-like processes, situated at about 

 the upper third of the latei^al margins sjecond Pleopod. 



of the telson. Fixed ramus three and Fig. 2Sg. 



a half times as long as broad, and half 



as long as the telson, equally tapering from the distal third to 

 the acute extremity. Mobile ramus minute, slightly curved, 

 narrow and acutely pointed, its length equal to the breadth 

 of the fixed branch. 



Total length 

 Breadth ... 



8 mm. 

 4 „ 



One specimen obtained off Crookhaven River, in 43-66 

 fathoms. 



