Mr. J. Black wall on new species of Araneidea. 333 



one is inflected near its base. The palpi are short and of a 

 yellowish-white hue ; the radial is greatly longer than the cu- 

 bital joint; and the digital joint, which tapers to a point, is 

 without a claw at its extremity. The eyes are seated on the 

 anterior part of the cephalo-thorax, which is rather prominent ; 

 three are grouped on each side in the form of a triangle, but not 

 so closely as in the spiders of the genus Pholcus, and between 

 these groups two smaller ones are placed transversely. The 

 cephalo-thorax is circular, glossy, somewhat convex, with de- 

 pressed lateral margins, and a large indentation in the medial 

 line; it is of a pale yellow-brown colour, with a dark brown 

 band extending along the middle, which is broadest in the me- 

 dial indentation and bifid at its anterior extremity ; a few rather 

 obscure brown spots occur on the sides, and the middle of the 

 long and prominent frontal margin has a brown hue. The 

 falces are small, vertical, conical, united at the base, armed with 

 a short, slightly curved fang, and have a single long tooth at 

 their extremity, on the inner surface ; they are of a red-brown 

 colour. The maxillae are long, somewhat enlarged where the 

 palpi are inserted, slightly so towards the extremity, which is 

 truncated on the inner side and terminates in a point ; they are 

 strongly inclined towards the lip, the extremities being in con- 

 tact, and are of a yellowish-white colour. The lip is very large, 

 diminishing in breadth towards the apex, which is somewhat 

 pointed ; its colour is yellowish-brown ; the middle of its base 

 has a brown hue, and a curved transverse line of a deeper shade, 

 whose convexity is directed forward, occurs near its extremity. 

 The sternum is broad, glossy, heart-shaped, with small promi- 

 nences on the sides, opposite to the legs ; it is of a pale yellow- 

 brown colour, that of the posterior part being dark brown. The 

 abdomen is short, thinly clothed with hairs, remarkably convex 

 above, and projects over the base of the cephalo-thorax; it is of 

 a pale yellow-brown colour, obscurely freckled with dull white ; 

 in the medial line of the upper part there is a series of large 

 brown-black spots, and on each side of them there are oblique 

 streaks of the same hue, which extend to the sides ; the spinners, 

 which are small, are tipped with black, and a fine black line 

 encircles the upper part of the coccyx, on which there are two 

 black spots placed transversely; the sexual organs are highly 

 developed and prominent ; the colour of the anterior part is dark 

 reddish -brown, and that of the posterior part pale red-brown. 



An immature male, which had to undergo its final change of 

 integument, closely resembled the female in colour, but was 

 rather paler and less distinctly marked. 



Mr. Eyton Williams took this new species of Artcma in Pcr- 

 nambuco in 1858. By the disposition of its eyes and the abso- 



Ann. &■ Mag. N. Hist. Ser. 3. Vol. ii. 23 



