316 
LINYPHIIDiE. 
joint of the palpi, which is shorter than the cubital, projects three apophyses from its extremity ; 
the smallest is situated underneath, the largest in front, and the third, of intermediate size, 
on the outer side ; the digital joint is oval, convex and hairy externally, concave within, com¬ 
prising the palpal organs, which are highly developed, complicated in structure, with a bold 
protuberance near the middle, and a short, fine, curved spine at the extremity; their colour is 
dark reddish-brown. The abdomen is oviform, rather broader at the posterior than at the 
anterior extremity, convex above, projecting over the base of the cephalo-thorax; it is thinly 
clothed with hairs, glossy, and of a brownish-black hue, that of the branchial opercula being 
dull-yellow. 
In March, 1837, males of this species, in a state of maturity, were found under stones in 
woods about Llanrwst. 
Walckenaera ludicra. PI. XXII, fig. 231. 
Walckenaera ludicra, Camb., Annals and Mag. of Nat. Hist., third series, vol. vii, 
p. 438. 
Length of the female, T ' B th of an inch; length of the cephalo-thorax, 5 \th, breadth, ^th ; 
breadth of the abdomen, ^th; length of an anterior leg, ^th ; length of a leg of the third 
pair, T J ;th. 
The cephalo-thorax is oval, convex, glossy, with a slight indentation in the medial line; 
the falces are conical, somewhat inclined towards the sternum, and armed with a few teeth 
on the inner surface; the maxillae are short, convex at the base, and inclined towards the 
lip; the legs and palpi are/moderately long and provided with hairs; the first and fourth 
pairs of legs are the longest, and equal in length, and the third pair is the shortest; each tarsus 
is terminated by three claws; the two superior ones are curved and slightly pectinated, and 
the inferior one is inflected near its base; the abdomen is oviform, glossy, thinly clothed with 
hairs, convex above, and projects over the base of the cephalo-thorax. These parts are of a 
pale, dull, brownish-yellow colour; the anterior region of the cephalo-thorax, where the eyes 
are situated, and its lateral margins being of a dark-brown hue, and the tibiae of the first and 
second pairs of legs having a tinge of brown. The lip is semicircular and prominent at the 
apex; and the sternum is broad, heart-shaped, convex, and glossy. These parts are of a 
brown colour, the lip and margins of the sternum being the darkest. The eyes are disposed 
on the anterior part of the cephalo-thorax in two transverse rows ; the four intermediate ones 
form a trapezoid whose anterior side is the shortest, and those of each lateral pair are seated 
obliquely on a minute tubercle, and are contiguous; the two anterior eyes of the trapezoid 
are the smallest of the eight. The sexual organs have a dark, reddish-brown hue, with a 
pale-yellowish septum in the middle. 
The male is smaller than the female, but it resembles her in colour. The anterior part of 
its cephalo-thorax is elevated, obtuse, inclined backwards, very convex behind, and depressed 
on the sides. The two posterior eyes are seated on the summit of the cephalic eminence, in 
