OCR Text |
Show 1875.] NEW SPECIES OF ERIGONE. 221 backwards : the height of the clypeus, whose profile-line is rather curved, equals about two thirds of that of the facial space. The eges are placed in the usual four pairs :-one pair on the summit of the cephalic eminence, not easy to be seen except by looking down upon them ; these are about a diameter's distance or rather more from each other; those of each lateral pair are contiguous to each other and placed towards the base of the eminence and about midway between its fore and hinder part; those of the fore central pair are smallest of the eight, dark-coloured and contiguous to each other, and each is separated from the fore lateral eye on its side by an interval about equal to the diameter of the latter : the area formed by the eyes is of a subtriangular or rather of an equilateral triangular form, the hinder angle being truncated by the line formed by the hinder (or upper) pair of eyes. The legs are slender, but moderate in length, their relative length being 4, 1, 2, 3 ; the femora of the first pair have three small, rather prominent black spines of different lengths in a longitudinal line underneath their fore extremities; tbe legs are of a dull yellow colour and, except the above-mentioned spines and a corresponding bristle or slenderer spine in a similar situation on the femora of the other legs, are furnished with hairs, only one or two very slender erect ones being on the uppersides. The palpi are similar in colour to the legs, short and not strong; the radial joint is rather shorter but stronger than the cubital, and has its fore extremity on the upperside produced into a short rather blunt-pointed apophysis, whose extremity (looked at in profile) appears to be more sharply pointed and slightly hooked ; on the inner side of this apophysis is an angular depressed point, which, in some views of it, gives the extremity of the radial apophysis a bifid appearance: the digital joint is of moderate size and ordinary form : the palpal organs are moderately complex, with a short stout, somewhat corkscrew-shaped, blunt-pointed, black spine at their extremity, and a curved corneous process at their base on the outer side. The falces are small, short, and rather paler in colour than the cephalothorax. The maxilla and labium are of normal form, and of a deep black-brown colour, paler at their extremities. The sternum is similar in colour to the maxillae, and is of ordinary form, but very convex. The abdomen is rather large, tolerably convex above, and projects strongly over the base of the cephalothorax; its colour is black-brown ; and it is clothed thinly with hairs. A n adult male of this Spider, which is allied to E.frontata (Bl.), was received from M. Simon, by whom it was found at Troyes in France. LIST O F SPECIES. T V 1 Eriaone retroversa <$, sp. n., p. 191, Plate XXVII. fig. 1. Paris. g' 2. - - consimilis S, sp. n., p. 192, Plate XXVII. fig. 2. Europe. 3. longiuscula <5, sp. n., p. 192, Plate XXVII. fig. 3. Corsica. 4' truncatifrons c$, sp. n., p. 193, Plate XXVII. fig. 4. Corsica. |