NERIENE. 
277 
parts, with the palpi, are of a brown colour; the lip, sternum, and anterior part of the cephalo- 
thorax being the darkest, and the legs and palpi, which are much the palest, having a yel¬ 
lowish or light-reddish tinge. The abdomen is oviform, glossy, sparingly clothed with hairs, 
convex above, and projects over the base of the cephalo-thorax ; it is of a dark-brown colour, 
tinged with olive, the medial line of the upper part, in some individuals, being the palest, the 
sexual organs have a dark, reddish-brown tint, and the colour of the branchial opercula is 
yellowish-brown. 
The male is much smaller than the female, but it resembles her in colour. The cubital 
and radial joints of its palpi are short; the latter, which is the larger, projects two very 
minute apophyses from its extremity; one, situated in front, is crescent-shaped, the cusps 
being acute ; and the other, which is shorter and more obtuse, occurs on the under side; the 
digital joint has a short oval form ; it is convex and hairy externally, concave within, comprising 
the palpal organs; these organs are moderately developed, protuberant, complex in structure, 
with a small, curved, black spine at their extremity, whose point terminates in a prominent, 
semitransparent membrane, and are of a red-brown colour. 
This species, which is closely allied to Neriene fusca, is met with among herbage and 
under stones in pastures near woods at Oakland; it has also been taken in Berwickshire by 
Mr. J. Hardy. The sexes are adult in autumn. 
Neriene vigilax. PI. XIX, fig. 191. 
Neriene vigilax, Blackw., Annals and Mag. of Nat. Hist., second series, vol. xi, 
p. 24. 
— — Blackw., Ibid., p. 120. 
Length of the male, T \th of an inch; length of the cephalo-thorax, 5 ‘ 5 th, breadth, roth; 
breadth of the abdomen, <^th; length "of a posterior leg, |th ; length of a leg of the third 
pair, ^th. 
The legs are hairy, of a red colour, tinged with brown, and the posterior is longer than 
the anterior pair; 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 cephalo-thorax is oval, 
convex, glossy, with a slight indentation in the medial line, and has a dark-brown tint, the 
lateral margins being the darkest. The falces are conical, armed with fine teeth on the inner 
surface, and slightly inclined towards the sternum, which is broad, somewhat convex, glossy, 
and heart-shaped. The maxillae are enlarged at the base, where the palpi are inserted, and 
inclined towards the lip, which is semicircular. The colour of the falces and maxillae is pale- 
brown, tinged with red, and that of the sternum and lip dark-brown. The palpi have a 
yellowish-brown hue; the cubital and radial joints are short, and the latter projects two 
apophyses from its extremity ; the larger one curves outward in front of the digital joint, and 
the smaller one, which is acute, is situated underneath; the digital joint is oval, convex and 
hairy externally, concave within, comprising the palpal organs; these organs are highly deve- 
