Mr. BuackwaLv's Descriptions of new Species of Spiders, 621 
9. Agelena prompta. Cephalo-thorace brunneo; mandibulis maxillis labioque 
rufescenti-, sterno flavo-brunneis ; oculis seriei anterioris intermediis om- 
nium minimis; pedibus brunneis, pari 4to longissimo, dein 1mo, 3tio bre- 
vissimo ; abdomine suprà saturate brunneo, serie medianá linearum fla- 
vescenti-brunneá, lateribus pallidè flavescenti-brunneis. 
Length of the female, not including the spinners, Toth of an inch; length of 
cephalo-thorax ; breadth n; breadth of abdomen vz; length of a 
posterior leg +; length of a leg of the third pair Br. 
Anterior part of the cephalo-thorax slightly compressed ; sides depressed, 
marked with furrows diverging from the upper part to the margins; a 
row of long hairs, directed forwards, extends along the middle, and there 
is an indentation in the posterior region; it is of a brown colour, the an- 
terior part, which is rounded and rather depressed, being the darkest. 
Eyes disposed on the fore-part of the cephalo-thorax in two transverse, 
curved, nearly parallel rows, whose convexity is directed backwards; the 
intermediate eyes of the anterior row are the smallest of the eight, and 
the lateral eyes, which are seated on a small eminence, and are nearly con- 
tiguous, are the largest. Mandibles strong, conical and vertical. Maxillæ 
short, gibbous 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 reddish brown. Sternum heart-shaped, 
of a yellowish brown colour. Legs and palpi brown. Fourth pair of legs 
the longest, then the first; third pair the shortest. Each tarsus is termi- 
nated by three claws; the two superior ones are curved and pectinated, 
and the inferior one is inflected near its base, where there isa pair of fine 
teeth. Abdomen oviform, thinly covered with. hairs, convex above, pro- 
jecting over the base of the cephalo-thorax; upper part dark brown, with 
a series of strongly marked, yellowish brown, angular lines, whose ver- 
— tices are directed forwards, extending along the middle; sides and under 
part pale yellowish brown, the latter having a band of a darker hue in the 
medial line. Superior spinners much longer than the rest, triarticulate, 
with the spinning-tubes arranged along the under side of the terminal 
joint; this joint is whitish, the remaining portion, and the other mam- 
4M2 
