458 Mr. J. Blackwall on new Species of Spiders 
the inner surface; the maxillz are short, straight, and rounded’ 
at the extremity ; the palpi are robust, and terminated by a fine 
minutely pectinated claw; the lip is semicircular ; and the ster- 
num is heart-shaped. These parts are of a yellowish-white co- 
lour, the base of the lip being tinged with brown, and the ster- 
num with green. The abdomen is oviform, convex above, and 
projects over the base of the cephalothorax; it is of a pale- 
yellow colour, reticulated with pale brown, the under part being 
the least distinctly marked, and has a ramified band of a brown 
hue extending from the anterior extremity of the upper part 
about half its length. 
This Sparassus, the only specimen of the genus in the collec- 
tion, is especially remarkable for having only a single claw at 
the extremity of each tarsus. 
Family THEripiipsé. 
Genus THERipIon, Walck. 
Theridion trahax, un. sp. 
Length of the female 3, of an inch; length of the cephalo- 
thorax +1;, breadth 1; breadth of the abdomen ~+5; length of 
an anterior leg +; length of a leg of the third pair -3,. 
The eyes are disposed on the anterior part of the cephalo- 
thorax in two transverse rows, high above the frontal margin ; 
the four intermediate ones nearly form a square, the two anterior 
ones (which are placed on a slight protuberance, and are rather 
nearer to each other than the two posterior ones) being the 
darkest-coloured of the eight; the eyes of each lateral pair are 
seated on a tubercle, and are contiguous. The cephalothorax is 
compressed before, rounded on the sides, convex, glossy, with 
an indentation in the medial line of the posterior region; the 
falces are conical and vertical ; the maxille are obliquely trun- 
cated at the extremity, on the outer side, and inclined towards 
the lip, which is semicircular; the sternum is heart-shaped, 
pointed at its posterior extremity, and has small eminences on 
the sides, opposite to the legs ; the legs are long, and provided 
with hairs; the first pair is the longest, then the fourth, and 
the third pair is the shortest; each tarsus is terminated by three 
claws ; the two superior ones are curved and pectinated, and the 
inferior one is inflected near its base; the palpi are short, and 
have a curved, pectinated claw at their extremity. These parts 
are of a brownish-red colour; the extremity and inner margin 
of the maxilla and the apex of the lip have a yellowish-white 
hue, and the digital joint of the palpi is tinged with brown. 
The abdomen is oviform, clothed with longish scattered hairs, 
convex above, and projects over the base of the cephalothorax ; 
