| OCR Text |
Show 1875.] NEW SPECIES OF ERIGONE. 329 The maxilla are of a somewhat oblong oval form, inclined (but not curved) towards the labium ; they are similar in colour to the falces, the extremities, however, being of a whitish hue. The labium is very short and of the ordinary somewhat semicircular form, its colour being darker than that of the maxillae. The sternum is similar in colour to the cephalothorax, and clothed thinly with longish bristly hairs. The abdomen is large, tolerably convex above, and projects well over the base of the cephalothorax; it is of a dark yellow-brown colour, and thinly clothed with fine hairs; when seen in spirit of wine it is finely mottled and marked with yellowish lines. This Spider is nearly allied to E. nemorivaga, p. 326, but may be easily distinguished on comparison with the figures and description of that species. The adult female resembles the male in colours and general characters ; the clypeus, however, is lower, and the falces have four teeth instead of three ; the form of the genital aperture is rather complex and defies description, but some idea of it may be obtained from the figure given. I had some doubt at first whether this Spider were not identical with Erigone paradoxa, L. Koch, the radial joint of the male palpus being of a very similar form ; but I am inclined to believe it to be quite distinct. Both sexes were received, in January 1874, from M. Simon, by whom they have been found in several parts of France. ERIGONE FLUCTUANS, sp. n. Adult male, length 1 line. This Spider is very nearly allied to Erigone subtilis, Cambr.; it may however, be distinguished by several particulars, noticed here. The cephalothorax is of a yellow-brown colour, rather flat, with a very slight impression in the profile line, behind the occiput, and the hinder slope is short and very gradual; the height of the clypeus, which is vertical and has no transverse impression, is less than half that of the facial space. The eyes are smaller than those of E. subtilis; those of the hinder row are equidistant from each other; if any thing the hind centrals may be rather nearer together than each is to the lateral of the same row on its side. The legs are of a brownish yellow colour, tolerably long, slender, and furnished with hairs and a very few short strong bristles or very slender spines. The palpi are short; the radial joint is stronger than the cubital, and has a small, somewhat tooth-like apophysis at its outer extremity, when looked at from tbe front and rather on the inner side; the digital joint is of moderate size, and has a conical prominence at its base, with its extremity directed inwards ; the palpal organs are complex, but do not present any very large or remarkable processes. The falces are strong and produced at the extremities, which are strongly divergent, the divergent portions excavated on the inner |
