Mr. Buacxwaut's Descriptions of new Species of Spiders. 625 
the smallest of the eight. Mandibles strong, conical, vertical, armed with 
a few teeth on the inner surface. Maxillze short, convex at the base, round 
at the extremity, and inclined towards the lip, which is nearly quadrate, 
being rather broader at the base than the extremity. These organs are 
brown, with a tinge of red, the base of the lip being much the darkest. 
Sternum short, heart-shaped, and of a yellowish brown colour. Legs and 
palpi brown, tinged with red; the thighs are the palest. Fourth pair of 
legs the longest, then the first, third pair the shortest; the tibia and 
metatarsal joints of the first and second pairs have a series of large, ses- 
sile spines on each side of the inferior part. Tarsi terminated by two 
curved, pectinated claws. The palpi have a small, curved claw at their 
extremity. Abdomen oviform, rather broader at the posterior than the 
anterior extremity, hairy, convex above, projecting over the base of the 
cephalo-thorax ; the upper part is very dark brown, with reddish brown 
and scattered hairs of a yellowish brown colour intermixed ; along the 
middle extends an obscure, dentated band of reddish brown; the under 
part is yellowish brown, with three faint, longitudinal lines of a darker 
hue. The superior spinners are short, and have the spinning-tubes dis- 
posed at their extremity. Plates of the spiracles pale yellow. 
The male is smaller than the female, which it resembles in colour and 
in the relative length of its legs. Third and fourth joints of the palpi 
short, the latter having a straight, pointed apophysis at its extremity, on 
the outer side; fifth joint oval, convex and hairy externally, concave 
within, comprising the palpal organs: they are highly developed, rather 
complicated in structure, vascular, with a black, corneous process at the 
extremity, which is broad, depressed, and curved near the base, and 
abruptly recurved about the middle ; their colour is red-brown. 
Agelena celans frequents woods in the vicinity of Llanrwst, running nimbly 
upon the ground and concealing itself under stones. The male has the palpal 
organs fully developed in August. It is a scarce species. 
