80 
THOMISIDvE. 
fourth pairs, and are nearly equal in length, the second pair being slightly the longer 
and the fourth pair a little surpasses the third in longitudinal extent; they are provided 
with hairs and strong spines, and are of a pale, red-brown colour, the femora and tibiae of the 
first and second pairs being marked on the upper part with two obscure, longitudinal, parallel 
lines, one of which has a blackish and the other a yellowish-white tint; each tarsus has two 
curved, deeply pectinated claws at its extremity. The palpi are of a pale, red-brown hue, 
and are provided with hairs and strong spines. The eyes are disposed on the anterior part 
of the cephalo-thorax in the form of a crescent; the lateral eyes of both rows, which are 
seated on tubercules, are larger than the rest, those of the anterior row being the largest of 
the eight. The abdomen is depressed, sparingly supplied with hairs, broader at the posterior 
than at the anterior extremity, and projects over the base of the cephalo-thorax ; it is of a 
red-brown colour above, being palest in the middle of the anterior region, and is encircled by 
a band of dull, reddish-white, which subtends several streaks of the same hue from each 
side towards the middle; there are on the upper part five conspicuous, circular depressions; 
the three anterior ones form a triangle whose vertex is directed forwards, and the other two 
are situated parallel to its base; the sides and under part are corrugated, and of a reddish- 
brown colour, that of the spinners being brotvnish; the branchial opercula have a pale, dqll- 
yellow tint; and the sexual organs, which are prominent and have an orifice nearly circular, 
are of a red-brown hue. 
The male, which is smaller and much darker coloured than the female, bears a strong 
resemblance to the male of Ttomisus luctuosus. The femora and genua of its first and second 
pairs of legs are of a very dark-brown colour, the remaining parts of these limbs, and the 
whole of the third and fourth pairs, having a reddish-brown hue. The colour of the palpi is 
red-brown; the cubital and radial joints are short, and the latter projects from its extremity 
a large, pointed apophysis, on the outer side, and a strong obtuse one underneath; the digital 
joint is oval, with a bold projection near the upper part, on the outer side; it is convex and 
hairy externally, concave within, comprising the palpal organs, which are highly developed, 
and have two curved, pointed, prominent, contiguous processes near their middle, one of 
which has a conical protuberance at its base, on the outer side; a large spine, whose point 
terminates in the bold projection on the outer side of the digital joint, curves round their 
extremity, and their colour is black, tinged with red. 
In spring this species may be observed running on the ground, in pastures near Llanrwst. 
The female constructs a lenticular cocoon of white silk, of a compact texture, measuring two 
fifths of an inch in diameter, on the inferior surface of the leaves of plants, the edges of which 
are folded upon it, and retained in that position by silken lines; it comprises about 185 
spherical eggs of a vellowish-white colour, not agglutinated together, which are hatched in 
July. 
An adult female, taken in May 1846, had the right eye of the posterior row very much 
smaller than the left eye of the same row. 
