1900.] INSECTS AND AEACHXIDS FROM SOMALILAXD. 53 



the inferior median heels not differentiated amongst the coarse granules 

 covering the lower surface of the segment ; 5th segment with the 

 inferior keels denticulated, the area between tkein coarsely granular; 

 upperside of the 3rd, 4th, and 5th segments smooth, the keels 

 also smooth or at all events only roughened with pores ; vesicle 

 granular, narrow, its width equal to its height and only about 

 one-third the length of the vesicle and aculeus. 



Chelae : humerus coarsely granular above, its anterior surface with, 

 strongly granular crests ; lower surface granularby crested behind ; 

 brachium finely granular in front, also roughened with pores and 

 granules behind ; hand wide, its w idth about equal to the length 

 of the movable digit, its upper surface smooth posteriorly on the 

 lobe, the area just above external keel coarsely granular, the rest 

 covered with low more or less anastomosing tubercles, which are, 

 however, more distinct towards ihe base of the immovable digit ; 

 the inner edge smooth, though the granules of the lower surface 

 run right up to it or even project slightly beyond it ; the lower 

 surface sparsely granular, with two weakly defined keels; keel 

 defining the hand-back above very strong and proaiinent. 



Legs smooth; protarsal segment of 1st and 2nd with a single 

 external apical spine ; tarsi armed with eight spines, two on each 

 side being on the lobe, one on its lower angle, the other in the 

 middle as in P. colei, P. bellicosus, &c. 



Pectinal teeth 17. 



Measurements in millimetres. Total length 93 ; length of carapace 

 18, of tail 48 ; width of 1st segment 5*8, of 4th 3*5, of vesicle 3-2 ; 

 width of hand 16, length of movable digit 17. 



Loc. North-west ."Somalilaud (Berbera or Hargaisa). A single 

 specimen (type) in the British Museum. 



Recognizable by the granulation of the lower side of the 4th 

 caudal segment and the obsoleteness of its inferior median 

 crests, &c. 



Pandintts peeli, sp. n. (Plate IV. fig. 2.) 



<$ . Closely allied to P. colei (Pocock), but differing in the 

 characters pointed out in the table given below (cf. p. 02). 



Carapace quite smooth above, sparsely punctured, much less 

 closely granular laterally than in P. colei. Terga weakly granular 

 at the sides only, not closely granular throughout the posterior 

 half as in P. colei. Chelae larger than in P. colei ; upper crest of 

 brachium smooth ; upperside of hand externally granular as in 

 P. colei, but internally much smoother, the granules anastomosing 

 and running together into ridges which become almost obsolete 

 on the posterior lobe of the hand. Fourth abdominal sternum 

 obsoletely granular in the middle. Pectinal teeth 15. 



Measurements in millimetres. Total length 81 ; length of carapace 

 14-5. of tail 38, of underhand 10 ; width of hand 13-5. 



Loc. North-west Somaliland (Berbera or Hargaisa). A single 

 specimen (type) in the British Museum. 



