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Show 1899.] AND SPIDERS F R O M TROPICAL WEST AFRICA. 873 and a little more than of 2nd ; protarsi of 1st aud 2nd legs without inferior apical spine; tibia of 1st lightly scopulate. Vulva consisting of a median red sclerite, shaped like the ace of spades, as broad as long, its anterior border with a median for-wardly directed prominence and convex sides ; the lateral tooth less prominent than in G. scopulatus. cS . Similar in colour to $ , legs much longer (cf. measurements). Legs not fringed as in C. burtoni and C. capulinus; tibial spur of palpus long, viewed from above diverging externally, then turned forwards at apex; seen from the outside aspect, the upper edge. is nearly straight, the lower concave, with the apex strongly bifurcate, the upper branch of the fork slightly hooked apically, the lower truncate with acute inferior angle ; tarsus with only a small tuberculiform prominence at base on outer side. Measurements in millimetres.- 2 • Total length 26 ; length of carapace 12, of 1st leg 44, 2nd 40, 3rd 34, 4th 47*5. d. Total length 20; length of carapace 11, of 1st leg 57, 2nd 50, 3rd 41, 4th 57. Loc. Benito Biver (67. L. Bates). CTENUS (LEPTOCTENUS) AGILIOR, sp. n. (Plate LV. fig. 7.) d • Colour. Carapace with pale median band constricted just behind the head, laterally infuscate, paler above the border, area around eyes black; mandibles pale, infuscate externally ; palpi and legs pale, obscurely banded with greyish black ; upperside of abdomen clothed with olive-yellow hairs, and diversified with red and black marking ; underside flavous. Carapace with a deep depression behind the head; head and posterior portion elevated ; clypeus narrower than anterior median eyes. Legs very long and slender; tarsal and protarsal scopula? very scanty ; tibia of 1st armed with 4 anterior and 4 posterior spines and with 6 pairs of inferior spines ; protarsus of 1st wdth 3 pairs of inferior spines, and with 1 anterior and 3 posterior spines ; patella? spined in front and behind. Palp with tibia longer than patella, and furnished externally with a large bifid prominence, of which the upper branch is longer and sharper than the lower ; base of tarsus above furnished with a conical process ; tip of tarsus prolonged and subcylindrical; tarsus not so long as patella and tibia taken together (for structural details of tarsus see Pl. L V . fig. 7). Measurements in millimetres.-Total length 10 ; length of carapace 5, of palpus 9, of 1st leg 33, 2nd 29, 3rd 24, 4th 37; tibia of 1st 10, of 4th 9. Loc. Benito Biver (67. L. Bates). A single adult d example. M . Simon has recently described two species of Ctenus (Leptoctenus) from West Africa, namely C. (L.) lycosinus and G. (L.) aculeatus, both from the Bio Pungo (Ann. Soc. Ent. France, 1897, pp. 493-4). Both are based upon females, and are not comparable with the male described above From C. (L.) modestus (id. he. |
