Mr. Blackwall's Descriptions of new Species of Spiders. 621 



9. .Igelena prompta. Cephalo-thorace brunneo ; mandibulis maxillis labioque 

 fufescenti-, steino flavo-biunneis ; oculis seriei anterioris inteimediis om- 

 nium minimis; pedibus brunneis, pari 4to longissimo, dein Imo, 3tio bre- 

 vissimo ; abdomine supra saturate brunneo, série medianâ linearum fla- 

 vescenti-brunneâ, lateribus pallidè flavescenti-brunneis. 



Length of the female, not including the spinners, Tô^h of an inch; length of 

 cephalo-thorax -^; breadth 3^4; breadth of abdomen^-; length of a 

 posterior leg \ ; length of a leg of the third pair -j^. 



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. Maxillae 

 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 is a 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, wiiose 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- 



4 M 2 



