CLUBIONA. 
127 
and of a pale, reddish-brown colour; and that of the branchial opercula is yellowish- 
white. 
The sexes differ in size and in the relative length of their legs, the male, which is 
smaller than the female, having the second pair of legs longer than the fourth pair. The 
radial joint of the palpi is slenderer than the cubital, and has a small, crescent-shaped 
apophysis at its extremity, on the outer side, the anterior limb of which is much the darker 
coloured ; the digital joint is oval, convex and hairy externally, concave within, comprising 
the palpal organs; these organs are highly developed and very prominent, extending upwards 
to the articulation of the radial with the cubital joint; they are simple in external structure, 
have a minute, pointed spine at their extremity, and are of a pale, red-brown colour. 
In the wooded parts of Denbighshire this spider is found among ivy and lichens 
growing on trees. It spins a large sac of white silk on' the under side of leaves or behind 
exfoliating bark, in which the female constructs a cocoon of a lenticular form in the month of 
July; it is composed of white silk, of a very fine texture, is three tenths of an inch in 
diameter, and contains between thirty and forty spherical eggs of a pale-yellow colour, 
not agglutinated together. 
Clubiona brevipes. PI. VII, fig. 80. 
Clubiona brevipes, Blackw., Linn. Trans., vol. xviii, p. 603. 
— — Blackw., Annals and Mag. of Nat. Hist., second series, vol. viii, 
p. 43. 
Length of the female, 1th of an inch; length of the cephalo-thorax, Ath, breadth, T ' ? th; 
breadth of the abdomen, ^th; length of a posterior leg, Ith; length of a leg of the third 
pair, 1th. 
The eyes are arranged on the anterior part of the cephalo-thorax in two transverse, 
parallel rows; the anterior row is the shorter, and is situated immediately above the frontal 
margin; the intermediate eyes of Loth rows form a trapezoid whose shortest side is before, 
those of the anterior row being the largest of the eight. The cephalo-thorax is convex, 
glossy, rounded on the sides, broadly truncated in front, and sparingly covered with short 
hairs; its colour is dark-brown, the anterior part and lateral margins being much the darkest. 
The falces are powerful, conical, convex at the base, in front, rather prominent, armed 
with a few teeth on the inner surface, and of a very dark-brown colour, approaching to 
black. Thp lip is somewhat oval, truncated at the apex, and resembles the falces in colour. 
The maxillae are long, straight, enlarged where the palpi are inserted, and at the extrem^, 
which is rounded. The sternum is oval, glossy*,with small eminences on the sides, opposite 
to the legs; its colour, and that of the maxillae, is dark, reddish-brown. The legs are short, 
and of a pale, dull-yellowish hue; the fourth pair is the longest, then the second, and 
the third pair is rather the shortest; each tarsus is terminated by two curved, pectinated 
claws, and below them there is a small scopula. The palpi, which are short, have a curved 
