OCR Text |
Show 212 REV. O. P. CAMBRIDGE O N [Mar. 16, in the same straight line, is the fore central pair, the eyes of which rather larger than usual and not quite contiguous to each other; each of them is separated from the fore lateral on its side by a little more than the diameter of the latter. All the eyes form a quadrilateral figure, longer than broad, and its hinder side longer than its fore side. The legs are moderate in length, their relative length being 4,1,2,3; they are slender, of an orange-yellow colour, and sparingly furnished with short hairs. The palpi are short, slender, and similar in colour to the legs ; the cubital joint is of moderate length, gradually converging from its fore extremity to its hinder one ; the radial joint is short, rather dilated, and has its fore extremity on the upperside produced into a longish, rather slender, nearly straight, slightly tapering, not very sharp-pointed apophysis, having the same general direction as the cubital joint; the digital joint is small, and of the ordinary oval form : the palpal organs are neither very prominent nor complex ; they have a small black filiform coiled spine at their fore extremity, but otherwise they present no remarkable feature. The falces are small, straight, nearly perpendicular, similar in colour to the cephalothorax, and armed with a few minute teeth towards the extremity on their inner surface. The maxilla and labium are of normal form, and similar in colour to the falces. The sternum is of a deep brown colour, and its surface is marked with roundish punctures. The abdomen is large, of broad oval form ; along the middle of the fore half of the upperside is an oval coriaceous patch of a darkish yellow-brown Golour; the hinder part of this patch is the most obtuse; on either side, and throughout its whole length, the abdomen is dilated, forming a kind of cushion, which rises above the central portion; these dilatations are of a dull yellowish whity-brown colour, obscurely mottled with largish spots of a deeper hue ; the hinder part of the central portion is of a dull browish colour, with some obscure, pale, transverse curved lines, perhaps visible only in spirit of wine. The spinners are enclosed in a sort of short, sheath-like case, split into several portions. The adult female is rather larger than the male, but is similar in general form and colouring ; the cephalothorax, however, has no trace of the occipital eminence ; and the relative length of the legs is different, 1, 4, 2, 3 ; the abdomen has the same peculiarity of form, but not so marked in its character, and the oval coriaceous patch on the fore part of the upperside is wanting. The form of the genital aperture is characteristic (seeA rig- 19, Plate X X I X . ). A n adult example of each sex of this very distinct species (which may be easily distinguished by the form of the abdomen alone) was received from M . Eugene Simon, by w h o m it was found at Morocco. ERIGONE THORACATA, sp. n. (Plate XXIX. fig. 20.) A.dult male, length f of a line. The cephalothorax of this species is of a deep brown colour; the |