446 Mr. R. I. Pocock on Arachnid a from the 



Allied to P. sex-maculatus, Simon, from Somaliland (in 

 Donaldson Smith's ' Through Unknown African Countries,' 

 p. 388), but at once recognizable by having the carapace 

 spotted and not bordered with black j from P. heraldicus, 

 Karsch (Zeitsch. ges. Naturw. 1878, p. 315), recorded from 

 Zanzibar and Tanganyika, it differs in the coloration of the 

 abdomen. In the last-mentioned feature it also differs from 

 the Malaysian form P. octo-maculatus, C. Koch (Die Arachn. 

 xii. p. 55). 



Note. 



I take this opportunity of characterizing representatives of 

 two apparently new species of spiders obtained by Emin 

 Pasha at Karagesi : — 



Cyrtarachne lactea, sp. n. (PI. XIII. fig. 8.) 



Colour. Carapace and legs uniform ochre-yellow ; abdomen 

 cream-white, with a black tubercle on each side at its lateral 

 angles, which are of a somewhat greenish-grey tint. 



Carapace low, lightly convex from side to side, flatfish, 

 along the top ; ocular quadrangle much wider in front, ante- 

 rior median eyes much the largest ; eyes of anterior line 

 recurved; clypeus about as high as anterior median eye. 



Legs not spiny, hairy ; the first and second pairs, and to a 

 less extent the third and fourth, tubercular; patella and 

 tibia of first about as long as carapace and longer than those 

 of fourth. 



Abdomen more than twice as wide as long, its anterior 

 border transverse, sinuate, its posterior forming a very obtuse 

 angle, lateral portions elevated, obtusely rounded, and furnished 

 with about a dozen low, rounded, hyaline tubercles, the inner 

 of which on each side is of a black colour ; the area between 

 the lateral prominences transversely hollowed ; integument of 

 abdomen striate and punctulate; sigilla small, three in an 

 anterior transverse line, and behind them two longitudinal 

 series of three each, the median sigilla of the three the largest. 

 Measurements in millimetres. — Length of carapace 4, 

 width 3*6; length of abdomen 5, width 12; length of first 

 leg 10, of second 9. 



Differs from the rest of the species of Cyrtarachne in the 

 form of its abdomen, its lower carapace, &c. 



