166 Annals of the South African Museum. 



below, in addition to the 5 internal and 4 (rarely 3) external spines 

 on the terminal lobes ; superior process much shorter than the lateral 



lobes. 



Operculum much broader than long, emarginate behind but not 



cleft longitudinally. 



Pectines with the scape rounded at base behind and free of teeth 

 for about two-fifths of its length. 



Measurements in Millimetres. Total length 88; length of cara- 

 pace 14 ; width of carapace 13 ; distance of eyes from anterior edge 

 9 ; width of hand 12f ; length of hand-back 8, of movable finger 11, 

 of tail 35 ; width of first caudal segment 5, of fifth caudal seg- 

 ment 3f. 



Adult Males (recently hilled, in spirits}. 



Differential characters : 



Carapace as long as the first and second caudal segments and 

 about one-fourth of the third, its upper surface sometimes with a few 

 very minute granules before and behind the median eye-tubercle. 



Ten/a roughened with exceedingly fine granulation, the seventh 

 segment coarsely granular at the sides. 



Sterna. All the segments very coarsely granular, especially in 

 the middle, often smooth at the anterior lateral angles in front of 

 the spiracles, the granules transverse and coarsest in the mesial part 

 of the last segment. 



Cauda moderately stout, all the crests, especially those on the 

 under surface, coarsely granular, the under surface of first two seg- 

 ments very coarsely granular, like the last sternal segment. 



Hands paler in colour, robust, strongly convex above, longer and 

 narrower than in the female, the granulation on the inner part of 

 upper surface more conical ; breadth of hand considerably exceeding 

 the length of hand-back. 



Operculnm much broader than long, completely cleft longi- 

 tudinally. 



Pectines with the scape rounded at the base behind, and free of 

 teeth for nearly one-fourth of its length. 



Measurements in Millimetres. Total length 85 ; length of carapace 

 13 ; width of carapace 12i ; distance of eyes from anterior edge 9 ; 

 width of hand 10| ; length of hand-back 8, of movable finger 13^, 

 of tail 43 ; width of first caudal segment 54-, of fifth caudal seg- 

 ment 4. 



Localities. (a] Types: 33 ? (22 ad.) and 6 J (3 ad.) from 

 Jackalswater, Namaqualand Div. (midway between Steinkopf and 



