402 



ously annulated in their outer part. Anterior antennae short and stout, 7-articu- 

 late, 2nd joint the largest and clothed along the hind curved edge with thin spinules, 

 terminal part short, 3-articulate, with all 3 joints of about equal size. Posterior 

 antennae almost exactly as in the preceding species. Posterior maxillipeds com- 

 paratively smaller than in that species. 1st pair of legs with the inner ramus 

 very slightly longer than the outer, 1st joint comparatively short and broad, 

 scarcely exceeding in length the middle one, last joint considerably longer and 

 linear in form. The 3 succeeding pairs of legs with the inner ramus more 

 fully developed than in the preceding species, being in 2nd pair considerably 

 longer than the outer, and in the 2 other pairs almost of equal length; 1st joint 

 of this ramus in all these, pairs rather tumid and carrying inside, near the base, 

 a remarkably stout spiniform seta, terminal joint in 2nd pair very slender, 

 equalling in length the other 2 combined, and having a single seta inside, that 

 of the other 2 pairs of moderate length and, like the terminal joint of the outer, 

 provided inside with 2 setae. Last pair of legs comparatively small, distal joint 

 well defined and conically oval in form, with 5 moderately long marginal setse; 

 inner expansion of proximal joint not extending as far as the distal joint, and 

 carrying 5 setae, 4 issuing from the transversely truncated extremity, the 5th 

 from the inner edge; outermost but one of the setse, as usual, the longest, the 

 inner 2 rather short and spiniform. 



Colour not yet ascertained. 



Length of adult female 0.58 mm. 



Remarks. The above-described form is evidently congeneric with the 

 preceding one, though specifically well defined, differing conspicuously in the 

 more produced caudal rami, as also in the structure of the anterior antennae and 

 legs. It is also of somewhat larger size. 



Occurrence. Two female specimens of this form were found in another 

 sample from Korshavn, taken at a depth of about 12 fathoms, muddy bottom. 



Page 227. 

 Add the 3 following species : 



Ameiropsis nobilis, G. 0. Sars, n. sp. 



(Suppl. PI. 31). 



Specific Characters. Female, Body slender and graceful in form, with 

 the anterior division only slightly broader than the posterior. Cephalic segment 

 scarcely as long as the 3 succeeding segments combined and not very deep; 

 rostral projection very small, narrow linguiform in shape. Urosome about the 



