502 MR. B. I. POCOCK ON THE ARACHNIBS COLLECTED [June21, 



The largest female measures 39 mm. long, the carapace being 

 19 long and 18'5 broad. 



The carapace is covered with golden hairs, showing a more or 

 less radial arrangement in strij^es ; the abdomen is yellowish or 

 greyish brown, symmetrically spotted and striped above. 



The carapace is a little longer than the patella and tibia of the 

 4th and 1st legs (in smaller examples, as in the type, it is about 

 equal), and about equal to tibia and protarsus ot 1st (in young 

 examples a little greater). The spine armature of the legs is as in 

 the type. 



Mtfosuremenis in milUmeti-es oflaryest example. — Total length 39 ; 

 length of carapace 18-5, width 15-5 ; length of 1st leg 49, 2nd 45, 

 3rd 41, 4th 51, palpus 31. 



In addition to the examples mentioned above that were 

 obtained on the Uganda-Mombasa Eailway, the British Museum 

 has recently received an adult female from Portuguese E. Africa. 

 The species evidently, therefore, has a wide distribution in eastern 

 equatorial Africa. 



Ptebixochilus spinifer, sp. n. (Plate XLI. figs. 1, la.) 



S . Colour. Carapace and mandibles black, but somewhat thickly 

 covered with golden-yellow hairs ; legs also blackish, but covered 

 with golden hairs, intermixed with grey and blackish ; the 

 extremities of the femora, patellae, tibiae, and protarsi whitish ; 

 abdomen golden yellow at the sides, passing into black on the 

 dorsal middle line, the black especially conspicuous posteriorly ; 

 lower surface of abdomen greyish yellow ; sternum and coxae 

 blackish with yellowish long hairs. 



Carapace convex, its width more than two-thirds of its length ; 

 length much less than that of tibia and patella of 4th leg, scarcely 

 equal to protarsus of 4th, a little less than patella and tibia of 2nd, 

 greater than those of 3rd, less than protarsus and tarsus of 3rd, 

 about equal to patella, tibia, and tai'sus of palp ; its width a little 

 less than tibia of 4th, equal to protarsus of 1st, sHghtly greater 

 than tibia of 1st, much less than patella and tibia of 3rd. Ocular 

 tubercle nearly spherical ; clypeus narrow, less than one-fourth the 

 length of the tubercle ; space between the edge of the clypeus and 

 the anterior lateral eye about equal to its long diameter. 



Legs 4, 1, 2, 3, the 4th exceeding the 1st by two-thirds the 

 length of the tarsus, patella, and tibia of 4th, a little greater than 

 those of 1st, equal to protarsus and tarsus of 1st ; tibia of 1st very 

 thick, the thickest segment in the limb, its width at least equal to 

 one-third of its length, the spine long and strong ; protarsus bowed 

 as in P. vorax, but armed below at its disfal end with a strong 

 tuberculiform spike ; tibia armed below distally with a pair of 

 apical spines ; protarsi of 3rd and 4th with a few apical spines 

 and with one median external spine, of 4th with one superior 

 distal spine. 



Measirrsments in millimetres. — Total length 20 ; length of cara- 

 pace 9-5, width 7-5 ; length of 1st leg 34-5, of 2nd 31, of 3rd 27, 



