202 rev. o. p. Cambridge on two [Mar. 18, 



The labium is similar in colour to the sternum, with a pale apex, 

 hut the maxillae are pale brownish cream-colour, with a brown 

 marking towards their base on the inner side. 



The abdomen is of a dull yellowish brown (deepening to sooty 

 black in some examples) on the upper side, softening off into 

 cream-yellow on the sides and underneath. Along the middle of 

 the upper side, but not extending to either extremity, is a fine cream- 

 yellow line, and the middle of the hinder part is of a blacker hue 

 than the rest. The tubercles are numerous, symmetrically disposed 

 towards the sides and hinder part, shining, subcorneal, of various 

 sizes, with a short bristle at the apex of each. The spinners, and 

 the surrounding area to a small and irregular extent, are of a whitish 

 cream-yellow hue. The underside of the abdomen is marked with 

 some considerable patches of black. 



Examples of this Spider were received some years ago from 

 Ceylon, from the late Mr. G. H. K. Thwaites. 



Ornithoscatoides nigra, sp. n. (Plate XV. fig. 4 ) 



Adult male, length lj line. 



The cephalothorax is of a deep rich black-brown hue, tuberculose, 

 and between the eyes of each lateral pair there is (as in 0. ceylonica) 

 a short horn-like prominence ; the tubercular prominences on which 

 those eyes are placed are stronger than in that species ; giving a 

 much nearer appearance to the form of the ocular area in Thomisus. 



The eyes are larger than in either of the foregoing species, but 

 preserve the same proportion and relative position as in O. ceylonica, 

 and have narrow yellowish rims. The height of the clypeus is less 

 than half that of the facial space. 



The legs are moderately long and strong, black, tuberculose, armed 

 with long and strong, but not numerous spines on the tibiae and 

 metatarsi of the first and second pairs. Some of the tubercles in a 

 longitudinal row on the underside of the femora of those pairs are 

 white ; a white annulus encircles the extremity of the metatarsus in 

 all the legs ; and near the middle of the femora of the third and 

 fourth pairs is a broad annulus of a clear yellow-brown hue, and the 

 tips of the tarsi in these legs are also white. The tibiae are bent, as 

 in O. ceylonica. 



The palpi are short ; humeral joints black-brown, with a white 

 spot or two near their fore extremity ; the cubital joint is somewhat 

 nodiform, brown, with a white spot or two on the inner side ; the 

 radial is similar in colour and length to the cubital ; its fore 

 extremity is enlarged and has on the outer side an apophysis of a 

 somewhat spine-like character, as long as the joint, tapering to 

 an exceedingly fine, slightly curved, sharp point directed forwards 

 and outwards ; the digital joint is of moderate size, ordinary form, 

 and of a deep brown colour. The palpal organs are of a simple 

 form, encircled with a blackish spine. The falces are moderate in 

 length and strength, of a deep black-brownish hue. 



The sternum, labium, and maxillce are black, the last slightly 

 tipped with a pale colour. 



