1898-1902. No. 18.] CRUSTACEA. 35 



end of the 1st joint of the inner, its last joint somewhat longer and 

 narrower than the other 2, and armed with 3 spines and 2 geniculate 

 setae; inner ramus rather slender, with each of the joints carrying inside, 

 near the end, a slender curved seta, 1st joint considerably longer than 

 the other 2 combined, last joint armed at the tip with a slender claw 

 and a curved seta. Natatory legs rather fully developed and resembling 

 in structure those in the other species of the genus. Last pair of legs 

 with the distal joint very narrow, sub-linear in form and finely ciliated 

 on both edges, marginal setae 5 in number and all issuing from the 

 outermost part of the joint, one of them very thin, hair-like, innermost 

 one the longest; inner expansion of proximal joint broadly triangular 

 in form and scarcely extending to the middle of the distal joint, mar- 

 ginal setae 5 in number, 2 of them attached to the inner edge. 



Length of adult female 1.05 mm. 



Remarks. -- According to the structure of the posterior antennae, 

 the oral parts, and the anterior pairs of legs, this form should evidently be 

 referred to the genus Paraineira, as defined by the present author in 

 his account of the Norwegian Harpacticoida. It differs conspicuously 

 from the other known species of this genus, however, in the very 

 slender form of the body, the greater length of the inner ramus of the 

 1st pair of legs, and finally in the shape of the last pair of legs, which 

 more resembles that in the genus Ameiropsis, G. 0. SARS. Also in 

 size this form considerably exceeds any known species of the present 

 genus. 



Occurrence. - Two female specimens of this form were found 

 in a bottle of specimens taken on July 7, 1900, off Sjopolse Ness from a 

 depth of 1525 fathoms. 



120. Mesochra, pygmsea, BOECK. 



This dwarf form occurred occasionally in 2 of the bottles exa- 

 mined. 



Fam. Laophontidse. 

 121. Laophonte depressa,, SCOTT. 



Some few specimens of this species, exactly agreeing with the form 

 described by the present author from the Norwegian coast, were found 

 in 2 of the bottles. Dr. TH. SCOTT records this species also from Franz 

 Josef Land. 



