OCR Text |
Show 1873.] REV. O. P. CAMBRIDGE ON SIBERIAN SPIDERS. 437 side is furnished with long, strongish, bristly hairs; and the underside of the abdomen is of a dull yellowish hue, suffused more or less with dusky blackish; the spinners have a supernumerary one (or united pair) in front of the usual six. The female resembles the male in colours and markings, and has calamistra on the outer side of the metatarsi of the fourth pair of legs. This Spider is nearly allied to L. puta (Cambr.), but may be at once distinguished by the cubital joint of the male palpus being merely gibbous, and not prominently pointed at its fore extremity as in that species, and in the less size of the spiral spine at the outer extremity of the radial joint. The present is also a more distinctly marked and more largely blotched-looking Spider, and of a darker or richer colour; the pale triangle on the upperside of the abdomen, as well as the larger size of the spiral spine at the outer extremity of the radial joint of the male palpus, and the greater development of its free extremity, seem also to be good specific differential characters. An adult male and an immature female were contained in the Siberian collection received from M . Taczanowski, with whose name I have much pleasure in connecting it. Fam. THERIDIIDES. Gen. LINYPHIA. LINYPHIA KARPINSKII, sp. n. (Plate XL. fig. 2.) Adult male, length 1 line. The whole of the fore part of this Spider (including the legs and palpi) is of a pale orange-yellow colour ; the colour of the abdomen is of a duller hue, in some examples suffused with a sooty brown. It is nearly allied to L. angulipalpis (Westr.), both in form and colour, but may be distinguished by its less size and paler colour, as well as by the form of the cubital joint of the male palpus ; in L. angulipalpis this joint has the middle of the fore side of an angular and almost sharply prominent form, while in the present species it is prominent but far more obtuse. The palpal organs also differ in their structure. The legs are furnished with a few hairs and some long spines ; they are rather long and moderately strong, their relative length being 4, 1, 2, 3. The maxillee are curved and inclined towards the labium; and the height of the clypeus, which is impressed below the eyes and prominent at its lower margin, exceeds half that of the facial space. The prominent portion of the cubital joint of the palpus (male) terminates with a tolerably strong, slightly bent, black, tapering bristle ; and there is another less strong one issuing from the fore side of the radial joint; both joints are furnished with a few other hairs. The palpal organs are well developed and complex, consisting of several curved and other corneous spines and processes. The female of this species is easily distinguished from that of L. |