Nalural History of East Fiamarh. 15 



Description of the female. — Length about" 74 mlllim. (3^4 of 

 an inch). Its general appearance is that of a small Cantko- 

 camptus. The antennules are moderately short and composed 

 of eight joints ; the first four are somewhat dilated, while 

 the four end joints are rather slender ; the fourth and fifth 

 joints, which are subequal in length, are shorter than the 

 others (fig. 15). ' 



The autennte are furnished with short and apparently one- 

 jointed secondary branches. 



The various mouth-organs resemble somewhat those of 

 Atlheyella pygm(ea (G. O. Sars). 



In the first pair of thoracic feet the inner branches, which 

 are about equal in length to the outer, consist of two joints ; 

 the end joint is rather narrower and shorter than the proximal 

 one, and is furnished with a moderately long and slendei* 

 terminal spine and two seta?, one being very long and slender 

 and one (the innermost) very short ; a short spinitbrm seta 

 also springs from near the end of the inner margin of the 

 proximal joint (fig. 16) ; both joints have a fringe of minuta 

 hairs on the outer margin. The outer branches are mode- 

 rately stout and composed of three subequal joints ; their 

 armature is somewhat similar to that of the outer branches of 

 the first pair in Attheyella ipygmcea. 



The second and third pairs are somewhat similar to each 

 other in structure ; the outer branches consist of three and 

 the inner of two joints ; the first joint of the inner brariches 

 is very short and moderately stout ; the second joint is 

 narrower and tapers towards the distal extremity, whicli 

 reaches to near the end of the second joint of the outer 

 branches; this end joint bears two coarsely-feathered terminal 

 set*, one being short and spine-like and one very long and 

 slender. In the second pair the second joint of the inner 

 brandies appears also to carry one small hair on the lower 

 half of the inner margin (fig. 17), while the same joint of 

 the inner branches of the third pair carries two setse similarly- 

 situated; in this pair the terminal spine is also stouter than 

 the terminal spine of the second pair (fig. 18). The structure 

 of the outer branches is somewhat like tliat of the outer 

 branches of the first pair, but a small seta springs from near 

 the middle of tlie inner margin of the third joint ; moreover, 

 the terminal spine of the end joint is very long, and a very 

 long and slender seta also springs from the inner dist il angle 

 of the same joint. In the fourth pair the inner branches^ 

 which are very short and scarcely reach to the end of the 

 first joint of the outer branches, have the proximal joint ex- 

 tremely small, while the end joint, which is the longer of tiie 



