1897.] ilE. R. I. POCOCK OJf ETHIOPIAN SPIDEKS, 753 



half, leaving a -n-ide distance between the segment and the tibial 

 spur when the limb is flexed ; tibial spur consisting of a single 

 long, lightlj curved spiniform process. Palpal organ with the 

 spine broad at the base, lightly curved, pointed and filiform at the 

 tip, arising from the posterior half of the bulb. 



Measurements in millimetres. Total length 31 ; length of cara- 

 pace 16-5, width 13-.5 ; length of 1st leg 50, of 2nd 43, of 3rd 39, 

 of 4th 49-5 ; patella and tibia of 1st 17-5, of 4th 16. 



Loe. Fwambo, Lake Tanganyika {Alexander Carson). 



Pterinochilus mtjbesus, sp. n. (Plate XLIII. fig. 4.) 



Colour a nearly uniform mouse-brown, with little white tufts of 

 hair at the extremities of the femora, tibiae, patellae, and protarsi of 

 the legs. 



Carapace less than one-fourth longer than broad, as long as the 

 patella and tibia of the 4th leg, a little shorter than the same seg- 

 ments of the 1st leg and than the protarsus and tarsus of the 4th ; 

 a little longer than tibia and protarsus of 2nd and a trifle shorter 

 than those of the 1st ; length from the fovea to the anterior 

 margin almost equal to the length of the 4th protarsus. Clypeus 

 narrow, the distance between the tubercle and its edge about equal 

 to one-fourth the length of the tubercle ; distance between the 

 edge of the clypeus and the lateral eye less than the long diameter 

 of the eye ; distance between the two lateral eyes equal to the 

 short diameter of either. 



Legs 4, 1, 2, 3, the 4th exceeding the 1st by about half the 

 length of its tarsus ; patella and tibia of 1st a little greater than 

 those of 4th ; protarsus of 4th equal to protarsus and half the 

 tibia of the 1st ; tibiae of all the legs with a pair of inferior apical 

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

 at the apex, one spine at the base of the scopula on the outer side. 

 Palpi unspined ; tarsus long, much longer than the tibia, about as 

 long as the protarsus of the 1st leg; a little inflated at the base 

 above. 



Measurements in millimetres. Total length 35 ; length of 

 carapace 13-5, of 1st leg 35-5, of 2nd 32-5, of 3rd 30, of 4th 38-5. 



Loc. Ugogo (Emin Pasha). A single female example. The 

 Museum also has females of the same or of closely allied species 

 from Mombasa and from the N.E. of Lake Victoria Nyanza 

 (Dr. Ansorge). 



Apart from sexual characters this species and the preceding 

 may be recognized as follows : — 



a. Ocular tubercle separated from the edge of the clypeus by 

 a space equalling at least half its length ; distance between 

 the anterior lateral eye and the edge of the carapace 

 exceeding twice its long diameter vorax, sp, n. 



h. Ocular tubercle separated from the anterior edge of the 

 carapace by a space less than one-fourth its length ; 

 distance between lateral eye and edge of carapace less, 

 if anything, than its long diameter murinus, sp. n. 



