426 W. T. Calman 



tbe ridges is more complex, those on the anterior half of the 

 somite conforming to the plan of the preceding somites while the 

 posterior half has only a median dorsal and a pair of ventro-lateral 

 ridges. The last somite has a short median dorsal and a pair of 

 lateral ridges. 



The appendages diflfer very little from those of C. macroph- 

 thahna as figured by Sars. The anteunules have the second Segment 

 of the peduucle distinctly longer than the third. The first legs 

 (fig. 31) do not reach the antero-lateral angle of the carapace, but 

 their distal Segments are relatively a little longer than in C. ma- 

 crophthalma. The second legs (fig. 32) are distinguished by the 

 great length of the terminal segment which is about 1/3 of the whole 

 length of the limb. The remaining legs (fig. 33) are a little longer 

 and more slender than are those of C. tnacrophthalma but do not 

 dififer in the relative proportions of the Segments. 



The uropods (fig. 34) are longer than in C. macrophthalma, 

 the peduncle being more than 21/2 times the length of the last 

 somite and a little more than twice the length of the sub-equal 

 rami. 



The integument over the whole of the body and limbs is very 

 thin and semitransparent allowing the outlines of the internal organs 

 to be Seen. 



Male. A single young male shows no marked differences in 

 external characters from the females described abo\e. 



Remarks. — This species resembles C. macrophthalma but is 

 at once distinguished from that species by the dififerent form of the 

 carapace, especially by the transverse ridge on the posterior part, 

 and by the ornaraentation of the abdominal somites as well as by 

 the thin and semitransparent integument. 



Occurrence. — Stations 18, 26, 39. Depth 950 — llOOmetres. 



Cmnpylaspis 8j)inosa n. sp. (pl. 28 figs. 35 — 43). 



Description of sub-adult Female (figs. 35 and 36). Total 

 length 3.1 mm. 



The carapace is little more than half the total length and is 

 not very strongly arched above. The pseudorostrum is sharply up- 

 turned, its upper margin as seen from the side nearly at right 

 angles to the sloping anterior part of the dorsal surface of the 

 carapace. There is no eye and the ocular lobe is reduced to a 

 narrow process reachiug nearly to the tip of the pseudorostrum. 



