286 
LINYPHIIDiE. 
towards the cephalo-thorax, which has a narrow indentation immediately behind each lateral 
pair of eyes; the radial is larger than the cubital joint, and projects a strong, obtuse apo¬ 
physis from its extremity, in front, towards the inner side; the digital joint is somewhat oval, 
with a large lobe on the outer side; it is convex and hairy externally, concave within, com¬ 
prising the palpal organs, which are highly developed, complicated in structure, with a curved, 
prominent process at their base, on the outer side, another, situated underneath, which has its 
extremity enlarged and depressed, and two long, contiguous, filiform, black spines, originating 
near their base, on the outer side, which pass obliquely downwards, and curving round their 
extremity extend considerably beyond the termination of the digital joint; the colour of these 
organs is red-brown. 
Early in October, 1853, both sexes of Neriene herbigrada, in a mature state, were detected 
among coarse herbage and moss growing in woods on the northern slope of Gallt y Rhyg. 
Like Neriene sulcata, this species makes a near approximation to the spiders of the genus 
Walckenaera. 
Neriene abnormis. PI. XIX, fig. 200. 
Neriene abnormis, Blackw., Linn. Trans., vol. xviii, p. 649. 
— — Blackw., Annals and Mag. of Nat. Hist., second series, vol. ix, 
p. 272. 
Argus abnormis, Walck., Hist. Nat. des Insect. Apt., tom. iv, p. 512. 
Length of the female, jth of an inch; length of the cephalo-thorax, T \th, breadth, T ' g th; 
breadth of the abdomen, TB th; length of an anterior leg, 1th; length of a leg of the third 
pair, -reths. 
The eyes are seated on black spots. The cephalo-thorax is oval, convex, glossy, with 
slight furrows on the sides converging towards an indentation in the medial line; the falces 
are powerful, conical, convex in front, armed with teeth on the inner surface, and inclined 
towards the sternum, which is heart-shaped; the maxillae are strong, convex underneath, and 
nearly straight; the lip is semicircular and prominent at the apex. These parts are of a 
reddish-brown colour, the sternum being rather the darkest, and the falces, maxillae, and lip 
the reddest. The legs and palpi are moderately robust, provided with hairs and fine, erect 
spines, and have a reddish-brown hue. The first and fourth pairs of legs, which are the 
longest, are equal in length, 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 abdomen is oviform, thinly clothed with hairs, convex above, projecting 
over the base of the cephalo-thorax; it is of a dull-brown colour, obscurely mottled with darker 
brown ; a depressed, oval, flesh-coloured process is connected with the anterior margin of the 
sexual organs; and the branchial opercula have a yellowish-white hue. 
The male is rather smaller than the female, and the relative length of its legs is different, 
the first pair being longer than the fourth ; its abdomen also is darker coloured than that of 
