1875.] NEW SPECIES OF ERIGONE. 217 
Spider; the form and structure of the palpi and palpal organs are 
also different. 
A single adult male was received from M. Simon, by whom it 
was captured at Rouen. ° 
ERIGONE BUCEPHALA, sp. n. (Plate XXIX. fig. 23.) 
Adult male, length 13 line; length of the female 13 line. 
The cephalothorax is of a bright reddish orange-yellow colour, 
the caput being strongly tinged with brown; the thorax is covered 
with dark, conspicuous punctures, disposed mostly in converging 
lines, which follow the course of the normal indentations ; towards 
the margins these punctures are less regularly placed: the caput is 
elevated and prominent ; the fore extremity, being the upper portion 
of the clypeus, projects forwards in a bold, obtuse, nose-like form, 
slightly bent downwards; and on the occiput is a large, almost 
globular eminence, deeply cut away or indented on either side of 
the fore part at its base, the indentation extending backwards for 
about half its width; the upper part of this eminence has a few 
short erect hairs on its smooth and glossy surface ; and some more 
eonspicuous hairs are also disposed along the middle of the ocular 
area in a longitudinal direction; those above the indentations are 
directed downwards, those below upwards; the lower part of the 
clypeus is strongly retreating. 
The eyes are in the usual four pairs; and in this species the pairs 
are rather widely separated from each other—one pair (in a trans- 
verse line) on the fore part of the top of the globular eminence, 
about two diameters distance from each other, another pair on 
either side, a little below the indentation which divides the eminence 
from the lower segment of the caput ; the eyes of each of these pairs 
are on a small tubercular eminence respectively, and are contiguous 
to each other: the fourth pair is placed just at the commencement. 
of the nose-like prominence; these are the smallest of the eight, 
dark-coloured, and are very near, if not contiguous, to each other : 
the ocular area is thus very large, its length also being greater than 
its breadth. 
The Jegs are moderate in length and strength, their relative length 
appearing to be 4, 1, 2, 3; they are of a bright orange-yellow colour, 
tinged with reddish, and are furnished with hairs and a very few fine 
erect bristles ; these last are more conspicuous in the female, being 
of a spinous nature. 
The palpi, except the radial and digital joints, which are dark 
brownish-yellow, are similar in colour to the legs; they are 
moderately long, but strong, the humeral and cubital joints being 
very nearly as strong as the femora of the first pair of legs: the 
cubital is long, strong, bent downwards, and slightly larger at its 
fore than at its hinder extremity: the radial is exceedingly short, 
and not nearly so broad as the fore extremity of the cubital joint ; it 
has its fore extremity on the upperside produced into a longish apo- 
physis, whose extremity is emarginate or bifid, the outer limb of the 
bifid portion being prominent, sharpish-pointed (with a short, spine- 
