234 



THETIS SCIENTIFIC RESULTS. 



being adapted to the upper border of the process. Structurally 

 the process is similar to that found in jEga crenulata, Luken*, 



but it is much more strongly 

 developed in the species under 

 notice. Fourth to seventh pairs of 

 legs very similar ; the sixth has 



First Leg. 

 Fig. 21c. 



Third Leg. 

 Fig. 2\cl. 



the basos joint a little less than three times as long as broad, 

 with a single spine at the lower distal extremity ; ischium joint 

 narrow at the base, and more than twice as long as broad at the 

 summit ; lower border with four equidistant spines, the one in 

 the middle being very much larger than the others ; upper and 

 lower distal margins fringed with long spines. Merus twice 

 as long as broad, and one-third shorter than the preceding joint ; 

 lower border and distal margins armed with spines, some of 

 which are longer than the joint is wide. Carpus longer and 

 much narrower than the merus, armed like the latter, but the 

 spines are fewer and somewhat smaller. Propodus longer than the 

 carpus, its greatest breadth is at the distal extremity, and is about 

 one-sixth of its length ; the lower border carries three spines, two 

 near the middle, and one distal. Dactylus slender, curved thrice 

 as long as the breadth of propodus. 



Inner border of peduncle of first pleopods armed with four or 

 five strong curved spines. Outer ramus very bi'oad towards the 

 base ; lateral margins slightly converging from about the middle 

 to the obtusely rounded apex ; inner ramus shorter than the 

 outer, more than twice as long as broad, truncated at the inner 

 base, and subacute at the apex. 



Sars.— Crust. Norway, ii., 1897, p. 61, pi. 25, f. 3. 



