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Show 1875.] NEW SPECIES O F E R I G O N E . 209 The legs are rather short and not very strong ; they are of a bright orange-yellow colour, furnished with hairs, and their relative length is 4, 1, 2, 3. The palpi are of moderate length and strength, and of a dull yellow colour ; the cubital joint is rather long, and nearly cylindrical in form ; the radial is very short, and its fore extremity on the upperside is produced into a not very long, curved, tapering, and not very sharp-pointed apophysis directed strongly inwards; on the outer margin of the radial joint is a group of prominent bristly hairs ; the digital joint is small; and the palpal organs are rather prominent, but not very complex or presenting any very marked feature. The falces are small, nearly vertical, similar to the palpi in colour, and armed with a few very minute teeth on their inner sides towards the extremity. The maxilla and labium are normal in form, and rather darker in colour than the falces. The sternum is tolerably convex, glossy, and of a deep black-brown colour. The abdomen is of a short oval form, and considerably convex above; it projects a good deal over the base of the cephalothorax, and is of a glossy jet-black colour, clothed sparingly with short hairs. A n adult male of this Spider was forwarded to m e in 1874 by M . Simon, by w h o m it was found at Algiers. By its specific name it is dedicated to Mons. H . Lucas (Curator of the Jardin des Plantes, Paris), whose voluminous work on the articulate animals of Algiers is too well-known to need more than a passing reference. ERIGONE INEDITA, sp. n. (Plate XXVIII. fig. 17.) Adult male, length nearly 1 line. The cephalothorax is small, of a dull darkish yellow-brown colour, the converging indentations of the thorax indicated by rows of not very distinct pock-like marks or punctures; the fore part of the caput is rather prominent, and on the hinder part, at the occiput, is a strong, somewhat globular eminence, strongly constricted or excavated at the sides where it joins the caput; the hinder part of the eminence is well rounded; the fore part, looked at in profile, slopes rather downwards, and there is a deepish transverse indentation between it and the ordinary prominence of the caput, thus forming two distinct segments, of which the hinder one is the largest when seen in profile ; the height of the clypeus is less than half that of the facial space ; there are a few short prominent hairs on the cephalic eminence, and a few on the lower segment. The eyes are in the usual four pairs; those of the upper pair are in a transverse line, nearly two diameters from each other, on the upper part of the cephalic eminence near the summit at the beginning of the front slope ; those of each lateral pair are at the upper part on either side of the lower segment of the caput, close in front of the fore extremity of the lateral excavation, and they are contiguous to each other ; those of the fore central pair are the smallest PROC. ZOOL. Soc-1875, No. XIV. 14 |