OCR Text |
Show 18/5.] NEW SPECIES O F E R I G O N E . 213 sides of the thoracic region are marked with numerous roundish punctures ; and the fore part of the caput is bold and prominent, with a strong and pretty high eminence on its occipital portion; on each side of this eminence, at its fore part, just behind the lateral pairs of eyes, is a short, somewhat oval, indentation, running backward towards the occiput; the clypeus is rather full, but retreating, and slightly exceeds in height half that of the facial space ; when looked at in front the occipital eminence is distinctly divided into two lobes by a longitudinal valley or indentation ; these lobes (looked at from the same point) have a direction slightly divergent from each other. The fore side of the occipital eminence, as well as the upper part of the caput in front of it, is clothed with a few short prominent hairs. The eyes are small and in the usual position ; those of the hind central (or upper) pair are placed on the fore part of the summit of the occipital eminence, or one on each of the lobes into which it is divided ; they are thus very widely separated from each other, and form a transverse line rather longer than that formed by the three other pairs, which are seated at the upper fore extremity of the caput itself; those of each lateral pair are slightly obliquely placed, and are contiguous to each other, the foremost being separated from the fore central eye nearest to it by the space of an eye's diameter; the eyes of the fore central pair are the smallest of the eight, but not quite contiguous to each other. The legs are short, moderately strong, and of a yellow-brown colour, tinged with reddish ; they are furnished with hairs aud a very few slender erect bristles ; and their relative length is 4, 1, 2, 3. The palpi are of moderate length and strength; their colour is pale yellow-brown: the cubital joint is strong, its fore extremity much stronger than its hinder one, and it is also much longer than the radial joint; this latter is very short and weak, but has its fore extremity on the inner side produced into a longish, curved, tapering apophysis, whose point is directed outwards ; and opposed to it is a small prominent, obliquely truncated projection, which springs from the outer side of the extremity of the joint; the digital joint is rather small, but of ordinary form ; the palpal organs are prominent and rather complex, with a somewhat circularly curved, reddish brown spine connected with their fore extremity. The falces are small, directed backwards, and armed with a few very minute teeth towards their extremities on the inner sides ; their colour is similar to that of the cephalothorax. The maxilla and labium are similar in colour to the falces, and of normal character in other respects. The sternum is of ordinary form, but very convex; and its surface, though glossy, is thickly covered with small, round, shallow punctures ; its colour is similar to that of the cephalothorax. The abdomen is of tolerable size, not particularly convex above, but projects closely and considerably over the base of the cephalothorax; its upperside is completely covered by a dark, rich yellow-brown, coriaceous epidermis, pretty thickly marked with roundish |