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Show 1890.] OF T H E F A M I L Y BUTHIDCE. 141 Legs with anterior surface oi femur and patella somewhat coarsely granular, but not markedly carinate, the granules being only sub-serially arranged ; tibice of the two posterior pairs armed distally beneath with a spur ; coxce of legs smooth. Pectines with 20 or 21 teeth ; all the teeth alike; in the male the teeth are larger and the pectines longer, extending in fact considerably beyond the extremity of the coxae of the fourth pair of legs ; in the female they fall short of this point. Stigmata slit-like. Measurements in millimetres.--Total length 27; cephalothorax, length 3, width 3"5 : length of tail 17-5; of 1st segment 2; of 2nd 2-3 ; 3rd 2-5; 4th 3 ; 5th 4 ; vesicle 2; width of 1st segment 2, of 5th 17. Palpi-humerus, length 3 ; brachium, length 35, width 1-3; manus, width 1-3; length of "hand-back" 2; length of movable dactylus 3*5. Three specimens, d and 2. from Madagascar, collected by the Rev. R. Baron. This species differs markedly from those here described in its variegated colouring. h\ this respect it somewhat resembles apparently R. centrurimorphus, which is also a Madagascar species ; but according to Dr. Karsch this last species differs from R. biittneri only in colour. I conclude, therefore, that it is furnished with keels on the hand and with only eight keels on the second caudal segment; if so, R. baroni differs from it in having a smooth hand and ten keels on the second caudal segment. EXPLANATION OF THE PLATES. PLATE XIII. Fig. 1. Rhoptrurus jacksoni, sp. n. Nat. size. 2, p. 138. 1 a. . Extremity of dactylus. 2. baroni, sp. n. Nat. size, p. J 40. 3. Uroplectes formosus, sp. n. Nat. size, p. 134. 3 a. . Extremity of dactylus. 4. insignis, sp. n. Nat. size, p. 132. 5. triangulifer (Thor.). Nat. size. d > P- 137. 5 a. . Extremity of dactylus. 5 b. . Vesicle. PLATE XIV. Fig. 1. Rhoptrurus kirki, sp. n. Nat. size. J, p. 137. 2. Lepreus fischeri, Karsch, var. nigrimanus. Nat. size, p. 130. 2 a. , . Extremity of dactylus. 3. carinatus, sp. n. Nat. size, p. 129. 3 a. . Extremity of dactylus. 4. occidentalis (Simon). Nat. size, p. 132. 4 a. . Extremity of dactylus. 5. Uroplectes fiavoviridis, Peters. Nat. size. 5, p. 137. 5 a. . Extremity of dactylus. PROC. ZOOL. SOC.-1890, No. XI. II |
