THERIDION. 
185 
Length of the female, 4th s of an inch; length of the cephalo-thorax, T lth, breadth, T l 6 th; 
breadth of the abdomen, T ' 5 th; length of an anterior leg, §ths; length of a leg of the third 
pair, ith. 
The legs are long, particularly those of the anterior pair, and have a yellowish-brown 
hue, with dark-brown annuli; 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 resemble the 
legs in colour, and have a small, curved, pectinated claw at their extremity. The cephalo- 
thorax is convex, glossy, compressed before, and rounded on the sides, which are marked 
with slight furrows converging towards a large indentation in the medial line; its colour is 
yellowish-brown, with broad, dark-brown, lateral margins, and a band of the same hue 
extending along the middle, which is contracted behind the cephalic region, and somewhat 
irregular in outline. The four intermediate eyes form a square; the tw T o anterior ones are 
seated on a protuberance, and are the largest and darkest of the eight; those of each lateral 
pair are placed obliquely on a small tubercle and are contiguous. The falces are conical and 
vertical; and the maxillae are convex at the base, obliquely truncated at the extremity, on the 
outer side, and inclined towards the lip. These organs have a reddish-brown tint. The lip 
is semicircular, and of a dark-brown hue. The sternum is of an elongated heart-shape, with 
minute prominences on the sides, opposite to the legs; it is glossy, and of a yellowish-brown 
colour, the margins, with the exception of the frontal one, having a dark-brown hue. The 
abdomen is oviform, sparingly clothed with short hairs, convex above, and projects over the 
base of the cephalo-thorax ; the upper part is of a dark-brown colour, freckled with yellowish- 
brown, and a large, acutely dentated, red band, finely bordered with yellow, extends along 
the middle; this band tapers from its anterior part, which is triangular, to the spinners ; the 
sides are of a pale-brown hue, freckled with yellowish-brown; the under part is of a brownish- 
black colour ; and that of the branchial opercula is yellow; the sexual organs have a reddish- 
brown hue, and their posterior margin is prominent. 
The male is smaller and slenderer than the female, but it resembles her in the design 
formed by the distribution of its colours. Its palpi, which are short, have a brownish-yellow 
hue, the digital joint being the darkest, and the colour of the palpal organs is red-brown. 
Two adult females of this handsome Theridion were received from the Rev. Hamlet 
Clark in October, 1853. Both specimens were captured at Richmond in the autumn of the 
same year by Mr. George Guyon; and an adult male was contributed by Mr. R. H. Meade. 
Theridion denticulatum. PI. XIII, fig. 118. 
Theridion denticulatum, Walck., Hist. Nat. des Insect. Apt., tom. ii, p. 305. 
— — Blaclcw., Linn. Trans., vol. xix, p. 124. 
— — Blackw., Annals and Mag. of Nat. History, second series, 
vol. viii, p. 443. 
Length of the female, jth of an inch; length of the cephalo-thorax, Jotli, breadth, 5 Vth; 
