| OCR Text |
Show 592 REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. [June 20, the legs is 4, 2, 1, 3; and the position of the eyes is exactly like that of T. oblongus. A single example was found on a low plant near Cairo. THANATUS FLAVUS, sp. n. Adult female, length 2\ lines. In size, colours, and general appearance this Spider is strikingly like T. lineatipes ; the form, however, of the abdomen is a little different, tapering more uniformly from the fore part to the spinners ; the cephalothorax has two broad but indistinct lateral longitudinal brownish bands, one on each side, leaving a marginal band of the normal ground-colour on either side, of the same width ; tbe legs are more or less thinly speckled with blackish specks, and none of them have the black lines so characteristic in T. lineatipes. The form of the genital aperture also differs from that species; nothing, however, but a drawing of each would render the differences of this aperture tangible for the purpose of specific determination. Four adult females were found on low plants in a marsh near Alexandria. THANATUS FLAVESCENS, sp. n. Immature female, length 3 lines. Strikingly like both the foregoing species in colours, this one may be at once distinguished by the more attenuated cylindrical form of the abdomen, and consequently its greater length ; the abdomen tapers a little, and very gradually, to the hinder extremity, it is of a clear straw-yellow colour, and has the faintest indication of a longitudinal central stripe throughout the upperside, formed by two gradually converging dusky broken lines ; the cephalothorax is yellow, slightly speckled with black, chiefly on the caput; the legs are the same in relative length, and have only a very faint indication of black speckling : the two posterior eyes (the laterals of the hinder row) are in the present species further removed backwards from the rest than in the two former, the central pair of the same row being also smaller. An immature male and female were found on a low bush near Cairo. Gen. PHILODROMUS, Walck. P H I L O D R O M U S A D J A C E N S , sp. n. (Plate LIX. fig. 11.) Philodromus fabricii, Cambr. Spid. Palest. & Syr., P. Z. S. 1872, p. 310 (exclude reference to Savigny). Adult male, length 13 line ; adult female, 2f lines. Subsequent examination and comparison have led me to believe that the Spider recorded (loc. cit. supra) is distinct from Philodromus fabricii, Sav. et And., differing from it in the more truncate termination of the very conspicuous dark marking on the fore half of the upperside of the abdomen, as well as in the relative length of the legs ; in the present Spider this is 4, 3, 2, 1, while in P. fabricii it is 4, 2, 3, 1. The structure, however, of the palpal organs of the male is not very unlike the figure shown in Savigny's work. |
