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Show 870 MR. R. I. POCOCK ON SCORPIONS, 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 tbe length of the patella and tibia of 1st 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 ist; patella armed with 3 spines, one on each side and one median apical; tarsi not scopulate, thickly setose belowr. Palp 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 Biver (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 & 313, 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 CTENIDCE. Genus CTENUS. CTENUS BURTONI F. Cambr. Ctenus burtoni, F. Cambr. Proc. Zool. Soc. 1898, p. 25, pl. iii. figs. 3 a-f. Loc. Cameroons (Capt. Burton); Benito Biver (67. L. Bates). |