1898.] BY MR. C. S. BETTON IK BEITISH EAST AFRICA. 501 



Carapace moderately high in the head-region, its width less 

 than tliree-quarters its length (13 : 18|) ; length exceeding that of 

 patella and tibia of the 1st leg by one-third of the protarsus, a 

 little less than those of 4th leg, equal to patella, tibia, and tarsus of 

 palp, less than tibia, protarsus, and tarsus of 2ud leg hj at least half 

 the tarsus ; length from fovea to anterior border equal to 4th 

 protarsus ; width a little less than patella and tibia of 2nd leg 

 and a little greater than those of 3rd leg. Eyes as in Harfactlra ; 

 tubercle high, nearly spherical ; distance between the anterior lateral 

 eye and the edge of the clypeus exceeding the long diameter of 

 the eye. 



Mandibles with nine large teeth and smaller granuliform teeth. 



Labium with about three rows of spicules. 



Prt^pi, when e.xtended, just surpassing the tip of the tibia of 

 the 1st leg ; unarmed, except for one spine below at the apex 

 of the tibia. 



Ler/s (from the base of the femur) 4, 1, 2, 3 ; the 3rd falling 

 short of the 2nd by two-thirds of its tarsus, the 2ad falling short 

 of the 1st by about half its tarsus, the 1st less than the 4th by its 

 tarsus and about one-fourth of its protarsus, the 4th exceeding 

 the 3rd by its tarsus and three-fourths of the protarsus ; a pair of 

 apical spines on the lower surface of the tibia and a meSian spine 

 at the apex of the protarsus of the 3rd and 4th ; patella and tibia 

 of 4th exceeding those of the 1st by almost half the protarsus, 

 about equal to the tibia, protarsus, and tarsus of the 3rd leg, which 

 are very slightly longer than the protarsus and tarsus of the 4th ; 

 tibia and protarsus of 1st a little shorter than protarsus and tarsus 

 of 4th ; tibia of 1st a little longer than the protarsus, a little more 

 than twice as long as broad ; tibia of 4th a little shorter than the 

 protarsus, its width rather more than one-third of its length ; width 

 of 4th protarsus about one-fourth of its length. 



Measurements in millimetres. — Total length of body 42, of cara- 

 pace 18-5, width of latter 13, length from fovea 12 ; length of 

 palp 27-5, of 1st leg 43, of 2nd 40, of 3rd 36, of 4th 52-5 ; patella 

 and tibia of 1st 15-5, of 4th 18-8 ; width of tibia of 1st 3, of 4th 4. 



Loc. A^oi. A single female example of this interesting new 

 Spider was obtained. 



Genus PTERiisrocHiLirs Pocock. 

 Pteeinochiltjs MURiisnjs Poc. 



Pferinochilus murinus, Pocock, Proc. Zool. Soc. 1897, p. 753, 

 pi. xliii. fig. 4. 



The type of this species was a rather mutilated female example 

 from TTgogo (Bmin Pasha). Pemale specimens were also recorded 

 from Mombasa and the north-east shore of Victoria Nyanza. 

 These examples prove to be not quite full-sized. I am therefore 

 glad of the opportunity to point out further specific features 

 observed in the well-preserved material obtained by Mr. Betton at 

 jS^di, Mbuyuni, and Machuma. 



