26 Annals of the South African Museum. 



The whole dorsal surface of the carapace is tomentose, the 

 pubescence though short sufficing to conceal most of the dentation. 

 The two rostral teeth are very small. The frontal margin has a 

 tooth on the inner and two teeth on the outer side of the orbital 

 notches, and there is a tooth or spine at the frontal end of the 

 impacted eye-stalk. The teeth of the lateral margin are in groups 

 of 8 and 4 in front of the cervical sulcus and 18 behind it, some of 

 the last set being very small. The teeth of the median carina are 

 small and obscure, but those behind the sulcus seem to be rather 

 numerous. 



In the pleon the carinae of the first three segments are produced 

 forward in very small teeth, the fourth not being produced, the fifth 

 forming a single cusp, the sixth being, as Alcock observes, without 

 the vestige of a carina. This at least is true of the male, but in the 

 female the front and hind margins of the segment are a little 

 pinched. Three ridges converge on the back of the telson 

 towards its acute point, the centre ridge commencing with a small 

 hump. 



The first antennae have two spines on the outer side of the large 

 first joint. 



The elongate first peraeopods have in the fourth joint six unequal 

 but conspicuous teeth distributed over the middle part of one 

 margin. In the male specimen the third joint measures 27, the 

 fourth 38, the fifth 33, the sixth 50 millimetres, giving a total length, 

 including the first two joints, of more than six inches. The fingers 

 measure 27 mm. They are strongly curved at the tips. The palm 

 to the hinge of the movable finger is 23 mm., ending in a sharp tooth, 

 which is not adjacent to the finger. 



The fifth peraeopods of the female are distinctly chelate, but those 

 of the male should perhaps not be called chelate at all. They have a 

 process of the sixth joint subequal to the finger in length, but the 

 grasping edge of the finger is turned not towards this process, but 

 away from it. 



The first pleopods of the male differ little from those figured by 

 Professor Smith for P. sculpt us. 



The male specimen has a total length of 140 mm., of which the 

 carapace is 64 and the pleon 76 mm. The carapace at the cervical 

 groove is 51 mm. broad. The second antennae are 90 mm. long. 



Locality. The male specimen was obtained from a depth of 

 900 fathoms, Cape Point N.E. by E. ^ E. 43 miles; the female, 

 which is a little smaller, from 890 fathoms, Cape Point E. f N. 

 41 miles, in each case the bottom being green mud. 



