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Show 1875.] NEW S F E C I E S O F E R I G O N E . 215 The legs are of tolerable length, slender, thinly furnished with hairs and fine bristles, of which last there are several short erect ones on the uppersides of the tibial joints; they are not very different in length ; but those of the third pair are the shortest. The palpi are of moderate length ; the cubital joint is longer than the radial, and its fore part is stronger than its hinder extremity ; the radial joint is short but strong, and the fore extremity on the upperside is produced into a long strong, somewhat bent, apophysis, the extremity of which terminates in a hook whose point is directed outwards; the radial joint, together with its apophysis, rather exceeds the cubital joint in length ; the digital joint is of moderate size, and oval form; the palpal organs are prominent, complex, and have a slender, coiled, filiform spine at their extremity. The falces are small, rather divergent, strongly inclined backwards towards the sternum, and armed towards their extremity on their inner sides with minute teeth. The maxilla, labium, and sternum are normal in form. The abdomen projects considerably over the base of the cephalothorax ; it is of an oval form, and moderately convex above ; its colour is black, with some mottlings and chevron-like markings visible (perhaps only) in spirit of wine, and of a yellowish colour ; it is thinly clothed with hairs, and the hinder part of the upperside is transversely wrinkled, the folds of the epidermis being rather marked and characteristic. The adult female resembles the male in general characters, and also in the transverse folds of the hinder part of the upperside of the abdomen (these, however, are fewer in number than in the male); but the colours are darker, the legs being shorter, stouter, and tinged with orange-red. The cephalothorax is of ordinary form, no traces of the cephalic eminence being visible, the eyes being consequently more closely grouped together, and the relative position of the different pairs altered ; the clypeus is rounded and prominent; the occiput has also a very slight shining convexity, and immediately behind it is a largish dark blackish patch, from which obscure blackish lines radiate, indicating the normal grooves and indentations. The genital aperture is characteristic (fig. 21,/). A n adult example of each sex was received from M . Eugene Simon, by w h o m they were found in Corsica. It is a very distinct species, bearing some resemblance to Erigone fuscipes (Bl.), but perhaps more nearly allied to E.fastigata (BL). ERIGONE BIOVATA, sp. n. (Plate XXIX. fig. 22.) Adult male, length | of a line. ."*iAi A i The whole of the fore part of this Spider, both above and underneath, is of a pale straw-colour. The cephalothorax strikes one at once as very similar to that of E. bifrons (Bl.) ; the fore part of the canut is broad, boldly rounded below and elevated above, being divided longitudinally by a deepish valley into two somewhat oviform lobes • a large deep oval excavation, narrowing to a point at the occiput divides the lobes on either side from the lower part of the |