MUSEUM OF COMPAEATIVE ZOOLOGY. 165 



The dorsal face of the second abdominal segment consists of a single plate, 

 undivided by longitudinal sutures, with a deep depression on each side of the 

 middle. The following segments are unsymmetrical on the two sides of the 

 unique type specimen (female), the abdomen being twisted to the right. The 

 lateral margins of these segments are laciniated. 



Eyestalks spinulose above ; eyes very black, with downward aspect. Distal 

 segment of antennule much longer than the antecedent segment, tuberculous 

 above. Antennae of moderate length ; outer margin of first segment spinulose ; 

 second segment spinulose, and produced on the outer side to a long spine ; 

 movable acicle reaching to the distal end of the peduncle, spinose, the longer 

 spines marginal, one spinule on the lower side and another on the upper side 

 near the base; penultimate and ultimate segments of peduncle bear small 

 setiferous tubercles. Eight cheliped more robust than its fellow, thickly beset 

 with strong spines. Ambulatory legs long, robust, spinose like the chelipeds; 

 their basal segments are wellnigh covered by the overlapping margin of the 

 abdomen (in the female). 



Length of carapace, 113 mm.; length of rostrum, 9 mm.; breadth of cara- 

 pace, 113 mm. ; length of posterior ambulatory legs, 255 mm. ; merus, 68 mm.; 

 carpus, 39 mm. ; propodus, 72 mm. ; dactylus, 56.5 mm. 



Station 3353. 695 fathoms. 1 female. 



This species, like the one next described, is much longer legged than P. gran- 

 ulosa (Jacquinot), the type of the genus. In this regard it is more like the two 

 ''Challenger" species described by Henderson. The specimen above described 

 was infested with a huge Peltogaster 36 mm. in breadth. 



Paralomis longipes, sp. nov. 



Male. — Carapace triangular ; gastric, cardiac, and branchial regions well 

 defined, protuberant ; the most prominent part of the cardiac area reaches a 

 higher level than the branchial areas ; whole surface of carapace thickly cov- 

 ered with blunt papillse ; viewed under a lens each tubercle is seen to be en- 

 circled with a ring of short, stiff setge ; one of the tubercles, situate in front of 

 the centre of the gastric region, assumes a spiny form. Rostrum furnished with 

 three prominent spines, one median and inferior, two lateral and superior ; the 

 latter are not so long as the inferior spine ; there is, too, a spinule on the 

 lower side of the inferior spine, and a still smaller one above, between the roots 

 of the superior pair, There are two pairs of long spines on the anterior margin 

 of the carapace, one at the external orbital angles, the other at the antero-lateral 

 angles of the carapace. There are also three or four prominent spines on the 

 side of each branchial area. Eyestalks spinulose above. Basal segment of the 

 antenna armed with an external spine, the second segment with several spines, 

 the most prominent of which is on the outer side; acicle furnished with five 

 prongs or spines, the largest median, the others lateral; flagellum much longer 

 than the carapace. Cheliped of moderate size (the right one has been lost from 



