Mr. J. Blackwall on newly discovered species 0/ Araneidea. 95 



legs in colour. Cephalo-thorax nearly quadrilateral, and spa- 

 ringly clothed with black and whitish hairs ; it slopes abruptly 

 in the posterior regioUj and is prominent in front, projecting be- 

 yond the base of the falces, which are small, vertical, and armed 

 with a few teeth on the inner surface : the sternum is oval. 

 These parts, with the maxillse and lip, are of a brown-black 

 colour, the last two, which are the palest, having a reddish 

 tinge, particularly at their extremities. Eyes disposed in three 

 rows, constituting three sides of a square, in the front and on 

 the sides of the cephalo-thorax ; the intermediate eyes of the an- 

 terior row are greatly larger, and the intermediate eye of each 

 lateral row is much smaller than the rest. Abdomen oviform, 

 pointed at its posterior extremity, convex above, projecting over 

 the base of the cephalo-thorax ; it is of a brown-black colour, 

 with short whitish hairs thinly distributed over its surface ; a 

 pale yellowish brown band, broader in the posterior than in the 

 anterior region, extends along the middle of the upper part, and 

 an obscure, narrow band of whitish hairs is curved round the 

 anterior part and produced on the sides nearly to the spinners ; 

 the sexual organs are reddish brown. 



An adult female Salticus notatus was found in June among 



fbage in a wood at Southgate. 



Family Thomisid^. 



Genus Thomisus, Walck. 



3. Thomisus umbratilis. 



jcngth of the male 2%ths of an inch ; length of the cephalo- 

 thorax y Q ; breadth y ^^ ; breadth of the abdomen -^^ ; length of 

 an anterior leg ^ ; length of a leg of the third pair j-. 



Eyes disposed on the anterior part of the cephalo-thorax in 

 two transverse curved rows, forming a crescent, whose convex 

 side is in front ; the eyes of each lateral pair, which are seated on 

 a tubercle, are much larger than the intermediate ones, those of 

 the anterior row being the largest of the eight. Cephalo-thorax 

 large, convex, abruptly sloping behind, compressed before, glossy, 

 and of a brownish black colour, with a longitudinal band of red- 

 brown on each side, and a broad one of the same hue extending 

 along the middle. Falces short, strong, subconical, vertical, of a 

 dark brown colour, with reddish brown extremities, and an ob- 

 scure spot of the same hue in front. Maxillae convex near the 

 base, pointed at the extremity, and inclined towards the lip ; they 

 are of a pale reddish brown colour, and have a dark brown spot 

 at the base on each side. Lip triangular and reddish brown, the 

 apex being the palest. Sternum oblong, heart-shaped, approach- 



