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Show 1875.] NEW SPECIES OF ERIGONE. 211 one springing from the occiput; the latter elevation is oval, rounded, and projecting forwards, lies nearly close upon the lower one; between them, however, there is a perceptible division, so that the junctional portion, at the occiput, forms only a kind of neck; the clypeus retreats, and is hollow in its profile-line. Two eyes are placed near the fore side of the summit of the upper segment of the caput, and six (in three pairs) on the fore part of the lower segment, in the ordinary position. The palpi are moderately long, and not very strong, except the digital joint, which is large ; the radial joint is shorter than the cubital, but strong and spreading at its fore extremity, the upper part of which, on the inner side, is produced into a long, strong, curved apophysis, whose extremity is of a somewhat bifid form and directed outwards ; on the outer edge of the apophysis are one or two sharpish prominent points ; the palpal organs are well developed and prominent, with a strong, sharp-pointed, black spine, coiled in a circular form, near their extremity on the outer side. A n adult male was received for examination, in April 1872, from M . Eugene Simon, by w h o m it was found near Paris. Believing this Spider to be the E. capito of Westring, I forwarded a drawing of the cephalothorax to Dr. T. Thorell (of Upsala), by whom the typical example, described by Westring ('Araneae Suecicas,' p. 213), was found in Sweden ; Dr. Thorell, in reply, confirms m y conjecture as to its specific identity. Since that time, M . Simon has, in January 1874, kindly sent m e another adult example of the same sex, found by himself at Bourg-d'Oisans, France. ERIGONE HETEROGASTER, sp. n. (Plate XXIX. fig. 19.) Adult male, length rather less than 1 line. The cephalothorax is of a dark yellowish brown colour ; it is small in comparison with the size of the abdomen; the occipital region is elevated into a large roundish knob-like eminence; and on either side, at its fore part, separating it from the caput, is a large and deep horizontal oval excavation, almost perforating the base of the eminence; these lateral excavations, like the corresponding ones in many other species, taper backwards, and run out near the hinder part of the occiput; the ordinary converging grooves of the thorax are indicated by fine blackish lines and not very distinct roundish punctures; the occipital eminence is smooth, glossy, and its upper and fore sides are furnished with a few short hairs; the fore part of the caput, forming its lower and rather the smallest segment, is rather prominent, the clypeus retreating, and less in height than half that of the facial space, and its upper part is also furnished with some short hairs. The eyes are small and tolerably equal in size; they are in the usual four pairs; those of the upper (or hinder) pair are placed widely apart (rather more than three diameters) on the fore part, at the upperside, of the occipital eminence ; those of each lateral pair are contiguous to each other, and placed rather obliquely on either side of the lower segment of the caput; between the lateral pairs, and |
