460 REV. O. P. CAMBRIDGE ON NEW BRITISH SPIDERS. 
Sternum broad, slightly convex, heart-shaped, colour dark-brown suffused with black- 
ish, punctuose like the cephalothorax, and furnished with a very few pale erect hairs. 
Abdomen equal in length to the cephalothorax, over the hind slope of which it projects 
considerably; it is moderately convex above, and in colour black, sparingly furnished 
with pale hairs; surface glossy, sides slightly rugulose in a longitudinal line; spiracular 
plates dull yellow, with reddish margins ; spinners short, and of a dull yellow colour. In 
spirit of wine the abdomen shows specklings and transverse angular lines of a pale colour. 
This is observable in many species of Neriene and Walckenaëra when in spirit of wine. 
An adult male of this spider was captured, in company with W. aggeris (Camb.), at 
Southport, Lancashire, at the roots of grass &c., in June 1859. 
WALCKENAERA BECKII, n.sp. (P. 57. no. 44.) 
Male adult, length 4!; of an inch, or 2 of a line. 
Cephalothorax short, broad-oval, a little shorter than the abdomen, and rather broadest 
behind; lateral margins of the caput without any constriction ; lower fore margin rounded ; 
. Colour deep brown, with a yellow tinge, glossy, but finely punctured under a lens; 
caput slightly elevated; fore and hind slope of elevation rather abrupt, and its upper 
surface broad and plane; a very slight depression towards the fore upper margin is visible 
when looked at from the point. Clypeus perpendicular, and its height equal to the 
space between the fore central and hind central pairs of eyes. Immediately above and 
behind each lateral pair of eyes is a long, strong indentation, running backwards in a 
direction parallel to the surface line of the elevation of the caput. At the bottom of this 
indentation, close behind the hind lateral eye, is a small shiny transparent spot; the 
normal furrows of the thorax are scarcely defined, while a strong depression marks the 
junction of the caput and thorax; the hind slope is long, gradual, and in a very slightly 
convex line; the cephalothorax entirely without hairs, perhaps accidentally rubbed or 
broken off (?). 
Eyes in four pairs, very small, those of the lateral pairs rather the largest, and the fore 
central pair the smallest of the eight ; one pair (removed from each other by about an eye's 
diameter only) is situated on the upper surface of the elevation of the caput, rather 
nearer to the fore than to the hinder margin; these are much sunken, and look upwards, 
and are difficult to be seen clearly, unless looked at from above; those of another pair are 
seated below these, very near together, but not touching each other, and not far removed 
on either side; and nearly in the same line are the lateral pairs, the eyes of each of which 
are placed obliquely on a slight tubercle; the four lowest eyes form a slightly curved 
row; all have black rims; and the fore centrals are seated on a largish black tubercle ; 
the space between the lateral pairs is equal to that between each and the eye of the pair 
on the summit of the caput on its side. 
Legs moderately long and strong, colour yellow, sparingly furnished with pale hairs; 
relative length 4, 1, 2, 3. | 
Falces strong, very slightly inclined towards the sternum, equal in length to the height 
of the facial space, very slightly divergent, and with a few fine teeth towards the extremity. 
on the inner surface; their colour is similar to that of the cephalothorax. . cel danh 
