856 MB. K. I. POCOCK ON SCORPIONS, PEDIPALPS, [NoV. 14, 



oblong silvery patch of hair on the upperside between the ocular 

 tubercle and the posterior vertical tubercles, and a silvery patch on 

 the upperside of the lateral tubercles ; mandibles deep brown ; 

 sternum bluish black, with central silvery patch ; maxillae and 

 labium black ; coxa? of legs deep brown with bluish tint ; tro- 

 chanters and femora red ; remaining segments nearly black, with 

 bluish lustre especially below ; a white band at base of tibiae and 

 protarsi below, the tibial band broad only on the 1st leg, also a 

 conspicuous white tarsal band on 4th leg ; palp with femur red, 

 the other segments blackish with white spots above. Abdomen 

 blackish above and below, yellow at the sides anteriorly, the upper- 

 side with a vertically interrupted transverse silver band behind the 

 anterior row of tubercles, and a series of silvery patches and lines 

 forming a longitudinal median band extending over two thirds of 

 the upper surface between the transverse silvery band and the 

 posterior tubercle ; sides of upper surface with narrow transverse 

 silvery stripes ; lower surface with a row of three silvery spots on 

 each side, extending from the epigastric fold to the sides of the 

 spinning-mammillae. 



Cephalic tubercles long, subspiniform, much longer than ocular 

 tubei-cle. Length of carapace equal to width of head, including 

 ocular tubercles, and as long as protarsus of 1st leg, shorter than 

 protarsus and tarsus of 4th leg by at least half the length of the 

 tarsus. 



Abdominal processes normal in number, as, for example, in 

 C. mitralis, and all small and tuberculiform ; the bifid projection 

 above the spinners rather prominent. 



Tibiae and protarsi of legs normally impressed above. 



Vulva as in figure (PI. LV. fig. 5 b). 



Measurements in millimetres. — Total length 14; length of carapace 

 6, of abdomen 10, width of abdomen 11. 



Loc. Benito River (6?. L. Bates). 



Easily recognizable from tlie S. and B. African species of the 

 genus by the form of the vulva, and by colour, the almost complete 

 absence of the white band at the base of the tibia on the 2nd, 3rd, 

 and 4th legs being exceptional. 



C^KOSTEis ALBESCENS, sp. n. (Plate LVII. fig. 16.) 



Allied to the East-African C. nodulosa Pocock (P. Z. S. 1898, 

 p. 514, pi. xU. fig. 7). 



Hairy clothing of head mesially white, laterally golden yellow ; 

 upperside of abdomen covered with greyish- white hairs, diver- 

 sified with black spots on the tubercles, sigilla, and elsewhere, and 

 with narrow transverse black lines which laterally unite, circum- 

 scribing transA'ersely elongate pentagonal areas ; lower side of 

 abdomen black ; femora steel-blue ; upperside of patella, tibia, 

 protarsus, and tarsus covered with silvery-white hairs, and varied 

 with pale golden yellow ; extremity of protarsus of 1st and in a 

 lesser degree of 2nd leg slightly infuscate ; 3rd and 4th legs more 

 diversified than 1st and 2nd : legs banded below as in C. nodulosa ; 



