376 Mr. J. Blackwall on newly discovered Spiders 
The legs are robust, provided with hairs and a few fine spines, 
and there is a calamistrum on the upper surface of the meta- 
tarsus of each postcrior leg, they are very unequal in length, 
the first pair being much the longest, the second pair surpasses 
the fourth, and the third pair is the shortest; they have a dull 
brownish-yellow hue, and, with the exception of the tarsi, are 
marked with very dark brown on the inner surface. The palpi 
are short, and resemble the legs in colour. The abdomen is 
somewhat oviform, convex above, projecting over the base of the 
cephalothorax, and has a prominent conical protuberance on the 
upper part of each side, which is nearly equidistant from both 
extremities ; the upper part is of a brown colour, bordered by a 
pale-yellow band, whose continuity is interrupted in front; the 
medial region has a dull brownish-yellow hue, and comprises in 
its anterior part a brown streak, which extends about one-third 
of its length ; the brown upper part is intersected by brownish- 
black transverse lines; those on the anterior half have their ex- 
tremities enlarged, more especially that which connects the two 
conical protuberances, and those on the posterior half form very 
obtuse angles whose vertices are directed forwards ; the sides are 
marked with oblique, confluent, dark-brown lines, and the under 
part has a dark-brown hue slightly mixed with dull brownish 
yellow, and is broadly bordered laterally with yellowish white ; 
the eight spinners have a brownish-ycllow hue; those of the in- 
ferior pair, which are tlie shortest, consist of a single joint each, 
and are united throughout their entire length. 
The specific name dubius is conferred provisionally upon this 
spider, as it possibly may be the female of Mithras jlavidus, 
though it differs from it greatly in colour. 
Family THERIDIIDz. 
Genus TuEeripion, Walck. 
Theridion elegans. 
Length of the fernale 3,ths of an inch; length of the cephalo- 
thorax ;!,; breadth ,1,; breadth of the abdomen 5; length of 
an anterior leg }; length of a leg of the third pair ¢. 
The legs are moderately long, provided with hairs, and of a 
reddish-yellow hue, with dark-brown annuli at the extremity of 
the joints, those of the femora being the broadest ; the first pair 
is the longest, the second and fourth pairs are about equal in 
length, and the third pair is the shortest ; each tarsus is termi- 
nated by three claws; the two superior ones are curved, and the 
inferior one is inflected near its base. The palpi resemble the 
legs in colour, but are rather paler, and have a curved claw at 
their extreniity. The cephalothorax is convex, glossy, somewhat 
