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Show 768 MR. R. I. POCOCK ON ETHIOPIAN SPIDERS. [June 15, 4th ; tibiae of legs weakly spined ; protarsus of 4th strongly spined, of the 2nd much less strongly, of the 1st and 2nd scarcely spined; claws with a few small teeth ('? on first leg). Sternum oval, longer than broad ; muscular scars (sigilla) marginal, the posterior deep. Spinning mammillce normal; the external less than half the length of the carapace, longer than the tarsi. 3 . Anterior tibia with two spurs, the external long and curved, the internal short and straight; the bulb of the palpal organ gradually narrowed below and passing without any sharp line of demarcation into the spine. Type, Selenogyrus cceruleus. SELENOGYRUS CERULEUS, sp. n. 2 .-Colour. Carapace, abdomen, and limbs covered with greyish-brown hairs, showing, especially on the limbs, strong metallic-blue reflections. Eyes of anterior line equidistant and subequal, the diameter of the medians excelling the short diameter of the laterals, but less than their long diameter; posterior laterals smaller than anterior laterals. Length of carapace about equal to length of patella and tibia of 1st leg or of 4th leg, the two being substantially equal; also about equal to the length of the protarsus and half the tarsus of the 4th. Legs: tibiae armed below distally with a pair of spines ; tibia of 3rd with about three additional spines, of 4th with only one additional posterior spine ; protarsi of 1st and 2nd with an inferior apical spine; protarsus of 3rd with a few spines on the proximal side of the scopula and a posterior series above ; protarsus of 4th armed below with some 12 or 13 spines; protarsal scopula of 4th leg very distinct; tarsal scopula divided by a very narrow band of setae; the rest of the lower surface thickly scopulate. Lower surface of mandible covered in its posterior third with a cluster of granules. Measurements in millimetres. Total length 36 ; length of carapace 17-3, width 13-5 ; length of 1st leg 45, of 2nd 41, of 3rd 39, of 4th 51; patella and tibia of 1st 16-5, of 2nd 15, of 3rd 12-5, of 4th 16-3. Loc. Sierra Leone. A single female example (Surgeon-Capt. Clements). SELENOGYRUS AUREUS, sp. n. (Plate XLI. figs. 2-2 a.) 3 .-Colour. Body, limbs, and carapace covered with a coating of brownish-yellow hairs, showing a fiery golden tinge, especially on the femora of the legs. Carapace a little broader than in the female, the width, however, less than the distance between the tubercle and the posterior margin. Legs long and slender ; patella and tibia of 1st and 4th subequal, |