118 Annals of the South African Museum. 



anterior and inferior margins strongly convex, posterior margin con- 

 cave on either side of a small projecting tooth situate a little below the 

 middle, 5 subi'ectangular, longer than deep, similar to that figured by 

 Chevreux for <$ of C. alicei (I.e. p. 3, fig. 2 F), but the groove along 

 the inferior margin less distinct, 6 subrectangular, as deep as long, 

 7 semicircular. 



Pleon segment 4 concave at base, segments 1 and 2 with a low 

 oblique keel running out to the subacute postero-inferior angles, 

 postero-inferior angle of segment 3 a little produced, acute. 



Telson equal in length to 4th, 5th and half 6th pleon segments 

 together, long, narrow, tapering, cleft for f its length, apices entire, 

 both margins and apices without spinules. 



First antenna 12 mm. long, flagellum ca. 32-joiuted, 1st joint 

 strongly setose on inner and lower surfaces, each of the other joints 

 with a few setules and one calceolus, accessory flagellum 7-jointed, 1st 

 and 7th joints elongate. 



Second antenna ca. 32 mm. long, 4th joint strongly convex on 

 posterior margin (as in C. alicei Chevreux), 4th and 5th joints with 

 tufts of setae on anterior margin, nagellum ca. 180-jointed. 



Epistome shorter than broad, proximally not so produced as in 

 C. challengeri Stebbing, not projecting in front of upper lip. 



Lower lips as in C. challengeri, with thick fringe of setae on outer 

 and inner margins of the lobes. 



Mandibles similar to those of C. anonyx Boeck, molar distinct, 

 denticulate, palp nearly twice length of trunk, 1st joint as broad as 

 long, 2nd joint equal to trunk, its greatest width nearly equal to half 

 its length, outer margin slightly concave proximally, distally straight, 

 inner margin strongly angled, 3rd joint half length of 2nd, elongate 

 ovate, apically acute, inner distal margin of 2nd and whole of inner 

 margin of 3rd with fringe of long setae, those at apex of 3rd joint 

 pectinate. 



First maxilla, inner plate with ca. 12 plumose spine-setae, diminish- 

 ing and passing gradually into ordinary setae near base, outer plate 

 with 11 spines, the inner ones denticulate, palp with 1st joint broader 

 than long, 2nd joint widest distally, distal margin subtruncate, with 

 ca. 16 stout spine-teeth, increasing in size from inner to outer margin, 

 and a number of setae. 



Second maxilla as in C. challengeri, but more strongly setose. 



Maxilliped, inner plate with 3 stout spine-teeth and several setae on 

 apex and 1 more elongate spine-tooth just below apex, outer plate with 

 ca. 20 close-set spine-teeth, rather more elongate than in C. challengeri 

 or C. anonyx, at least twice as long as broad, palp strongly setose. 



