1875. ] NEW SPECIES OF ERIGONE. 209 
The /egs 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, eurved, 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 mazille 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. 
An adult male of this Spider was forwarded to me in 1874 by 
M. Simon, by whom 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 cephalothoraz 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 inden- 
tation 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 begin- 
ning 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 con- 
tiguous to each other ; those of the fore central pair are the smallest 
Proc. Zoou. Soc.—1875, No. XIV. 14 
