870 ME. E. I. POCOCK ON SCOBPIONS, PEDIPALPS, [Nov. 14, 



band extending from middle of clypeus to side of posterior 

 emargination. Upperside of abdomen covered with short hairs of 

 a rusty-red hue ; a snow-white lateral band set off above and below 

 by a narrow darker stripe ; legs and ventral surface not varied. 



Carapace nearly circular, its width equal to the length of its 

 upper surface from posterior median eyes to posterior emargination ; 

 its upper surface posteriorly elevated, a little higher than cephalic 

 region ; length a little less than tibia of 3rd and a little greater 

 than the tarsus of 4th leg, a little excelling half the length of the 

 patella and tibia of ]st and 4th. Eyes of anterior line a little 

 recurved; laterals much smaller than centrals, their upper edges in 

 a straight line ; anterior line noticeably wider on each side than 

 line of posterior medians, the latter much larger than anterior 

 medians ; ocular quadrangle less than height of clypeus, much 

 wider behind than in front, its posterior width exceeding its 

 length. Inferior border of mandible armed posteriorly with 4 

 teeth. 



Legs long and slender, 4, 1, 2, 3 in length ; patella and tibia of 

 1st and 2nd subequal and a little shorter than of 4th ; protarsus of 

 4th equal to protarsus and one third of tarsus of 1st ; patella 

 armed with 3 spines, one on each side and one median apical; tarsi 

 not scopulate, thickly setose below, 



PaZp extending past middle of tibia of 1st leg; tibial segment 

 longer than patella, distally incrassate, armed externally with a 

 crescentically upcurved pointed spine, and on the inner side with 

 a short quadrate lightly emarginate buttress ; tarsus about as long 

 as patella and tibia, short in its basal half, subcylindrical distally. 



Measurements in millimetres. — Total length 21 ; length of carapace 

 18-3, width 9 ; length of 1st leg 56, of 2nd 54, of 3rd 48, of 4th 60. 



Loc. Benito River {G. L. Bates). An adult male and an 

 immature female. 



In this description some characters considered to be of generic 

 value have been repeated to substantiate the claim of the species 

 to be ranked in the genus Dolomedes. This genus is, according to 

 Simon, replaced in Tropical Africa by the allied form Tapinothele, 

 which has been recorded from Zanzibar (Hist. Nat. Araignees, 

 i. pp. 310 & 33 3, 1898). But the species here named transfuga 

 does not appear to differ in any important particulars from the 

 genus Dolomedes as characterized by Simon, and certainly does not 

 fall into the genus Tapinothele. 



Family CxENiDiE. 



Genus Ctbnus. 



Ctenus burtoni F. Cambr. 



Ctenus burtoni, F. Cambr. Proc. Zool. Soc. 1898, p. 25, pi. iii. 

 figs. 3 a-f. 



Loc. Cameroons (Capt. Burton) ; Benito Eiver (G. L. Bates). 



