OCR Text |
Show 1897.] MR. R. I. POCOCK ON ETHIOPIAN SPIDERS. 753 half, leaving a wide distance between the segment and the tibial spur when the limb is flexed; tibial spur consisting of a single long, lightly curved spiniform process. Palpal organ with the spine broad at the base, lightly curved, pointed and filiform at the tip, arising from the posterior half of the bulb. Measurements In millimetres. Total length 31 ; length of carapace 16-5, width 13-5 ; length of 1st leg 50, of 2nd 43, of 3rd 39, of 4th 49-5 ; patella and tibia of 1st 17'5, of 4th 16. Loc. Fwambo, Lake Tanganyika (Alexander Carson). PTERINOCHILUS MURINUS, sp. n. (Plate XLIII. fig. 4.) Colour a nearly uniform mouse-brown, with little white tufts of hair at the extremities of the femora, tibiae, patellae, and protarsi of the legs. Carapace less than one-fourth longer than broad, as long as the patella and tibia of the 4th leg, a little shorter than the same segments of the 1st leg and than the protarsus and tarsus of the 4th ; a little longer than tibia and protarsus of 2nd and a trifle shorter than those of the 1st; length from the fovea to the anterior margin almost equal to the length of the 4th protarsus. Clgpeus narrow, the distance between the tubercle and its edge about equal to one-fourth the length of the tubercle ; distance between the edge of the clypeus and the lateral eye less than the long diameter of the eye ; distance between the two lateral eyes equal to the short diameter of either. Legs 4, 1,2, 3, the 4th exceeding the 1st by about half the length of its tarsus ; patella and tibia of 1st a little greater than those of 4th ; protarsus of 4th equal to protarsus and half the tibia of the 1st; tibiae of all the legs with a pair of inferior apical spines ; protarsi of 3rd and 4th with a few spines above and below at the apex, one spine at the base of the scopula on the outer side. Palpi unspined; tarsus long, much longer than the tibia, about as long as the protarsus of the 1st leg; a little inflated at the base above. Measurements in millimetres. Total length 35; length of carapace 13-5, of 1st leg 35-5, of 2nd 32-5, of 3rd 30, of 4th 38-5. Loc. Ugogo (Emln Pasha). A single female example. The Museum also has females of the same or of closely allied species from Mombasa and from the N.E. of Lake Victoria Nyanza (Dr. Ansorge). Apart from sexual characters this species and the preceding may be recognized as follows :- a. Ocular tubercle separated from the edge of the clypeus by a spaceequalling at least half its length ; distance between the anterior lateral eye and the edge of the carapace exceeding twice its long diameter vorax, sp. n. b. Ocular tubercle separated from the anterior edge of the carapace by a space less than one-fourth its length; distance between lateral eye and edge of carapace less, if anything, than its long diameter murinus, sp. n. |