448 REV. O. P. CAMBRIDGE ON NEW BRITISH SPIDERS. 
fore central eye and the lateral one of the same row on its side; those of the hind 
central pair are nearer together than each is to the lateral of the same row on its side. 
The eyes do not differ greatly in size; those of the front central pair are slightly the 
smallest and darkest, and near together, but not touching; those of each lateral pair 
are placed a little obliquely on a small tubercle. 
Legs and. palpi bright brownish yellow, rather strong and moderately long. Relative 
length 4, 1, 2, 3, the former sparingly furnished with hairs only, the latter also with 
spines, especially on the radial and digital joints; the form of the genual joints is the 
same as in N. livida. The falces are powerful and moderately long, prominent near the 
base in front, and rather so on the outer sides; they are a little impressed near the 
extremity on the inner side, having their surface toward the outer side a little rough 
in appearance, eaused by some rows of very short but rather strong bristles, each of 
which appears to proceed from a very minute tubercle or granulation ; they are straight, 
but inclined a very little inward to the maxillæ, and are armed with a row of strong 
sharp teeth on their inner sides at the extremities. Colour dark yellow-brown, tinged 
with red. | 
Maxille rather long, and a little darker in colour than the cephalothorax ; they are 
strong, straight, rounded at the extremities on the outer sides, and inclined to the 
labium, which is short, semicircular, and of a deep bistre-brown colour, pale at the apex. 
Sternum of the same colour as the cephalothorax, but tinged with darker brown, and 
furnished with a few long erect hairs. 
Abdomen large, oval, broader behind than before; moderately convex above, and pro- 
jecting a good deal over the base of the cephalothorax. It is of a deep black-brown 
colour, clothed pretty thickly with prominent but fine hairs; and its hinder part for a 
short space has the appearance of being spanned by numerous transverse, slightly curved, 
parallel pale lines; but whether this was caused by the cuticle of the abdomen having 
become shrunken into wrinkles, or not, could not be satisfactorily ascertained. 
Spiraeular plates large and of a yellowish colour; the external sexual organs are 
simple, their orifice small, edged with deep red-brown, and of a transverse oval form. 
This species, which may readily be known from most others of the genus by its size, 
was captured at Bloxworth, and, until lately, overlooked among specimens of N. livida, 
from which, however, its falces at once distinguish it, these being (in the present species) 
but very slightly excavated or, rather, indented near the extremities on the inner side, 
while in N. livida they are extensively so. In N. Huthwaitii the falces are rather longer, 
and divergent at their extremities. The clypeus also in that species is higher, and the 
eyes of the hind row are more nearly equidistant from each other. 
NERIENE ASPERA, n. sp. 
Female adult, length 2, of an inch. 
This species resembles N. oblonga in form and general appearance, but it is larger — | 
darker in colour, the fore part of the cephalothorax, the falces, maxille, and labium ue 
being strongly tinged with reddish yellow-brown; the eyes also are larger and more — 
closely grouped together, though those of the hinder row are relatively in a similar posi — 
