OCR Text |
Show 208 REV. O. P. CAMBRIDGE O N [Mar. 16, curved, pale-coloured spine projects, with rather an outward direction, from their fore extremity. The falces are moderately long and strong, and rather obliquely cut away towards their inner extremities, where they are armed with small sharp teeth ; they are similar in colour to the fore part of the caput. The maxilla and labium are of the usual form, and of a deep brown colour. The sternum is of ordinary shape, of a deep brown-black colour, glossy, furnished with a few fine bristly hairs, and, under a lens, apparently marked with a few fine punctures. The abdomen is oval, tolerably convex above, and projects over the base of the cephalothorax ; its colour i3 a glossy black, clothed sparingly with hairs. This Spider, of which two examples were sent to m e by M . Eugene Simon, from France (Col de Natoia), is allied to E. alpina (Cambr.) and E. cucullata, Koch ; but it may easily be distinguished by the larger proportional size of the front lobe of the caput, which in those two species is smaller than the hinder lobe ; it is also allied to E. cristata (Bl.) ; but the very different form of the caput and its cleft, as well as its larger size and shorter form, will distinguish it at once both from that and its near ally E. permixta (Cambr.). In the form of the caput and the cleft which divides it into two lobes, E.foraminifera bears a strong resemblance to E.fissiceps (Cambr.), a North-American Spider; but the smaller size of the latter, its different colours, and the coriaceous punctured epidermis of the upperside of the abdomen, as well as the strikingly different form of the palpi, will distinguish it at a glance. ERIGONE LUCASI, sp. n. (Plate XXVIII. fig. 16.) Adult male, length § of a line. The cephalothorax is of a dark blackish-brown colour, the thoracic indentations indicated by black lines; the greater part of the caput is strongly elevated, the elevation projecting rather forwards, and separated from the fore part of the caput proper by a strong transverse indentation ; the occipital region of the elevation forms a sloping curved profile-line; a large deep longitudinal indentation or excavation divides the elevation from the caput on either side ; the fore part of the elevation is clothed with a few short hairs, mostly directed downwards, and meeting others directed upwards from the fore part of the caput; the height of the clypeus considerably exceeds half that of the facial space. The eyes are in the usual four pairs; those of the upper (or hind lateral) pair are placed one on each side of the fore part of the summit of the elevation, and form a line only a very little, if any, shorter than that formed by the two fore lateral eyes ; those of each lateral pair are placed on the sides of the fore part of the caput proper (or lower segment of the caput); and those of the fore central pair are on a strongish tubercular prominence, very indistinct, though not very minute, and not quite contiguous to each other. |