16 Mr. J. Blackwall on newly diftcovered species 0/ Araneidea. 



is the shortest ; each tarsus is terminated by two curved, black 

 claws, dentated near the base : the palpi, which are short, are 

 supplied with hairs and spines, and have a small, curved, black 

 claw at their extremity : the cephalo-thorax is convex, com- 

 pressed before, and rounded on the sides and in front ; it slopes 

 abruptly behind, is without an indentation in the median line, 

 and on its frontal margin there is a row of strong bristles di- 

 rected forwards : the falces are short, strong, subconical, vertical, 

 and have some bristles in front, towards the inner side : the 

 maxillae are slender, convex near the base, pointed at the extre- 

 mity, and inclined towards the lip, which is triangular : the ster- 

 num IS heart-shaped. These parts are of a pale yellowish brown 

 colour ; the cephalo-thorax has a brownish black band extending 

 backwards from each lateral pair of eyes, and narrow, yellowish 

 white margins, and the lip has an oblong, dark brown spot near 

 its base. Eyes disposed on the anterior part of the cephalo- 

 thorax in two curved, transverse 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. 

 Abdomen depressed, corrugated, particularly on the sides, much 

 broader at the posterior than at the anterior exti'emity, the latter, 

 which appears as if cut in a straight line across, projecting over 

 the base of the cephalo-thorax; very short hairs are sparingly 

 distributed over its surface, and it is of a yellowish gray colour 

 freckled with brown, a broad, dentated band, which is bordered 

 laterally with red-brown, extending along the middle of the 

 upper part ; the anterior part of this band comprises five con- 

 spicuous, brown depressions ; the anterior ones describe a tri- 

 angle whose vertex is directed forwards, and the other two are 

 situated parallel to its base ; two obscure, brown lines, forming 

 a very acute angle whose vertex is directed backwards, occur be- 

 tween the depressions constituting the two posterior pairs; the 

 sexual organs have a dark reddish brown tint ; and the colour of 

 the branchial opercula is pale yellow. 



The male is much smaller, darker coloured, and less distinctly 

 marked than the female. The cephalo-thorax has a red-brown 

 tint, the band directed backwards from each lateral pair of eyes 

 is black, and the lateral margins are yellowish white. The legs 

 and sternum are of a red-brown colour, the latter being marbled 

 with a deeper shade of red-brown. The falces have a brownish 

 black hue, with a red- brown mark in front which extends to the 

 outer side. The maxillse and lip have a dark brown tint, their 

 extremities being the palest. The axillary and humeral joints 

 of the palpi are of a dark brown colour tinged with red, the 

 cubital and radial joints are of a red-brown hue tinged with dark 



