872 M,E. R. I. POCOCK ON SCORPIONS, PEDIPALPS, [NoV. 14, 



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

 pace 15, width 12 ; length of palp 17, of 1st leg 50, of 2nd leg 47, 

 of 3rd leg 38, of 4th leg 51 ; patella and tibia of 1st leg 2G, of 4th 

 17, protarsus of 1st 12, of 4th 16. 



Loc. Benito River (G. L. Bates). 



Rivalling the preceding species, G. hingsleyi and C. occidentalis, in 

 size, and resembling them in the absence of the inferior apical pro- 

 tarsal spine of the 1st and 2nd leg ; but at once recognizable from 

 both by its coloration, especially of the lower surface of the 

 abdomen. It further resembles C. hingsleyi iu having the carapace 

 shorter than the 4th protarsus and very much in the form and size 

 of the vulva, hut differs from it and approaches C. occidentalis in 

 having the carapace longer than the patella and tibia of the 3rd leg. 



The black patch on the lower side of the abdomen in C. scopulatus 

 calls to mind the somewjiat similar colouring found in Phoneutria 

 melanogastra of Bosenberg and Leuz (JB. Hamburg. Mus. xii. 

 p. 12, pi. i. lig. 14), from East Africa ; but the two species are 

 certainly quite distinct, seeing that P. melanogastra is less than 

 half the size of C scopulatus and has a median pale stripe on the 

 carapace. And lastly from Simon's species C. erythrochelis from 

 Landana (Bull. 8oc. Zool. Trance, i. p. 222), which also has red 

 hairs on the base of the mandible, C. scojmlatus may be recognized 

 by the absence of pale bands on the carapace and the presence of 

 the black Held on the lower side of the abdomen. 



Ctenus auricularis and C. capullnus of Karsch, from Chinchoxo, 

 also seem to differ in colour from G. scopulatus, as well as from 

 G. occidentalis and C. Htufs!ei/i (see Zeits. gesammt. Naturw. lii, 

 pp. 347-348, 1879). 



Ctesus eitulatus, sp. n. (Plate LVII. figs. 26, 26 a,) 



5 . Golour. Carapace covered with blackish or olive-brown hairs, 

 with a median pale golden stripe, and a broad irregular interrupted 

 submarginal band extending from the sides of the clypeus to the 

 posterior border ; upperside of abdomen oi'namented with a median 

 golden-yellow or greyish band, narrow in front and indented at 

 the sides with four pairs of large black spots ; sides of abdomen 

 blackish, mottled with yellow or grey spots ; on the lower side the 

 pale spots are arranged in definite longitudinal posteriorly con- 

 vei'giug lines : sternum, coxse, aud lower side of legs uniformly 

 deep brown ; upperside of legs varied, especially on the femora, 

 with golden-yellow bands, the rest of the segments tinted with 

 yellow ; palpi uniformly dull brown ; mandibles black iu front, 

 without bright coloured base. 



Garapace slightly elevated above behind the fovea, as long as 

 patella + tibia of 3rd leg, as tibia of 1st, and a little longer than 

 protarsus of 1st and than tibia of 4th, about four fifths of the 

 protarsus of the 4th ; ocular quadrangle more narrowed in front 

 than iu G. scopulatus, its eyes I'elatively larger, the anterior 

 separated by a space which about equals the radius. 



Legs 4, 1, 2, 3; patella -f tibia of 4th a little less than of Lst 



