352 Mr. J. Blackwall on newly discovered Spiders 



and a detached white spot occurs near its termination ; near the 

 middle of the upper part there is a transverse white Une, and 

 between it and the spinners a small white spot ; four indented 

 spots occur on the anterior half, forming a trapezoid whose 

 shortest side is before ; there is a large pale-yellow-brown band 

 in the middle of the under part, which tapers to its posterior 

 extremity, but does not extend to the spinners. 

 This spider was immature. 



Salticus radians. 



Length of the female f ths of an inch ; length of the cephalo- 

 thorax ^ ; breadth J ; breadth of the abdomen ^"t ; length of an 

 anterior leg § ; length of a leg of the second pair ~. 



The minute eye of each lateral row is rather nearer to the an- 

 terior than to the posterior eye of the same row. The cephalo- 

 thorax is large, glossy, sparingly clothed with hairs, somewhat 

 quadrilateral, sloping abruptly at the base, and projecting a little 

 beyond the falces in front ; it is of a dark-brown colour, with a 

 broad white band, consisting of short hairs, on the posterior half 

 of each lateral margin, and the cephalic region reflects bright 

 tints of green and gold. The falces are short, powerful, conical, 

 divergent at the extremity, armed with a few small teeth on the 

 inner surface, and reflect brilliant hues of gold and green. The 

 maxilla3 are straight, and enlarged and rounded at the extremity; 

 the lip and sternum are oval. These parts are of a dark-brown 

 colour, the sternum and the extremity of the maxillae being the 

 palest. The legs are robust, and provided with hairs and a few 

 spines, the tibiae of the anterior pair being densely covered with 

 the former on their inferior surface ; the first pair is the longest, 

 then the fourth, and the second pair is the shortest ; each tarsus 

 is terminated by two curved claws, below which there is a small 

 scopula ; they are of a dark-brown hue, faintly tinged with red, 

 the tarsi being the reddest. The palpi resemble the legs in 

 colour, but are rather paler. The abdomen is oviform, pointed 

 towards the spinners (whicjh are prominent), convex above, and 

 projects over the base of the cephalothorax ; it is thinly clothed 

 with longish hairs, and of a dark-brown colour, the under part 

 being the palest ; the upper part is covered with small adpressed 

 scale-like hairs, which reflect rich tints of green and gold ; on 

 each side of the medial line there are three minute, parallel, 

 white spots, disposed longitudinally; four larger ones occur on 

 each side, the posterior one, which is the longest, being directed 

 obliquely towards the spinners ; and a few white hairs form a 

 small spot on the coccyx. 



This Salticus was immature. 



