Mr. BuackwaLvs Descriptions of new Species of Spiders. 649 
longest and equal in length, third. pair the shortest. Eyes seated on 
black spots; the intermediate ones of the anterior row are much the 
smallest of the eight. Abdomen oviform, glossy, thinly covered with 
hairs, convex above, projecting over the base of the cephalo-thorax ; its 
colour is yellowish red. Sexual organs black, faintly tinged with red. 
Plates of the spiracles dull yellow. 
The male resembles the female in colour, but the anterior part of his 
cephalo-thorax is more prominent, and the relative length of bis legs is 
different, the first pair being the longest, and the second and fourth pairs 
equal in length. The tibiæ of the first and second pairs of legs are some- 
what dilated underneath, near their extremity, and these enlargements 
are thickly clad with long, fine hairs. Third joint of the palpi remark- 
ably large, very prominent on the inner side, and provided with an acute 
apophysis in front, near the outer side; fourth joint crescent-shaped, the 
lower limb of the crescent being turned outwards, in front of the fifth 
joint, which is oval, convex and hairy externally, concave within, com- 
prising the palpal organs; these organs are highly developed, compli- 
cated in structure, prominent, with two long, slender, curved, black 
spines on the under side, and are of a red-brown colour. 
This species, which bears a strong resemblance to Neriéne rubens, occurs 
under stones and on plants growing in the woods at Oakland, near Llanrwst. 
The male has the palpal organs fully developed in October. 
36. Neriéne abnormis,. Cephalo-thorace appendicibusque rufescenti-brunneis ; 
abdomine brunneo saturatiüs obscuré marmorato. | 
Maris cephalo-thorax pedesque multd magis rufi, abdomen saturatius, 
pedes anteriores posterioribus longiores. 
Length of the female 7th of an inch; length of cephalo-thorax ; breadth 
1. breadth of abdomen 7s; length of an anterior leg 4 ; length of a leg 
19.? 
of the third pair 35. 
Cephalo-thorax oval, convex above, glossy, with slight furrows on the sides, 
and an indentation in the medial line of the posterior region. Mandibles 
powerful, conical, convex in front, armed with teeth on the inner surface 
and. inclined towards the sternum, which is heart-shaped. Maxillæ 
