658 Mr, Blackwall's Desaiptions of new Species of Spiders. 



Eyes placed on black spots on the anterior part of the cephalo-thorax : 

 the intermediate ones form a trapezoid whose anterior side is the short- 

 est ; the other four are disposed in pairs on the sides of the trapezoid, 

 those constituting each pair being seated on a small eminence, and con- 

 tiguous ; the posterior eyes of the trapezoid are the largest, and the ante- 

 rior ones the smallest of the eight. Mandibles reddish brown, powerful, 

 conical, armed with teeth on the inner surface, and slightly inclined 

 towards the sternum, which is heart-shaped, rough with long, erect, 

 black hairs, and is of a dark brown colour. Maxillae short, strong, 

 straight, and somewliat quadrate, resembling the mandibles in colour. 

 Lip semicircular and prominent at the extremity, which is reddish brown, 

 the base being blackish. Legs and palpi long, slender, and of a reddish 

 brown colour, with blackish brown bands. First pair of legs the longest, 

 then the second, third pair the shortest. The palpi are terminated by a 

 slightly curved claw. Abdomen pointed at the extremity, very convex 

 above, projecting over the base of the cephalo-thorax ; it is thinly covered 

 with hairs, and of a yellowish brown colour, freckled with numerous, mi- 

 nute, whitish spots; along the middle extends a series of angular lines of 

 a brownish black hue, whose vertices are directed forwards, and whose 

 extremities, greatly enlarged, form a row of very conspicuous, irregular 

 spots on each side of the medial line ; several of the anterior angles are 

 bisected by a fine, brownish black line ; two longitudinal, irregular, 

 brownish black bands occur on each side of the abdomen, the upper one 

 being connected with the enlarged extremities of the angular lines by 

 small, confluent spots of the same hue ; a large, brownish black band, 

 whose anterior extremity is the broadest, occupies the middle of the ab- 

 domen underneath, and comprises a yellowish brown medial line. Sexual 

 organs prominent and brownish black, except at the extremity, which is 

 flesh-coloured. Plates of the spiracles pale yellow. 



The male is smaller tlian tlie female, but resembles her in colour, 

 design, and the relative length of his legs; the absolute length of these 

 organs, however, is rather greater, an anterior one measuring ^Jths of an 

 inch. Third and fourth joints of the palpi short, the former, which is the 

 larger, having several long, curved bristles projecting from its extremity, 



