ME. J. BLACKWALL ON SOME TUSCAN SPIDERS. 411 



there is a very small scopula. The pali)i are short, and of a pale 

 yellowish-white hue. The abdomen has a broad, oviform figure ; it 

 is sparingly clothed with hairs, convex above, and projects over the 

 base of the cc[)ha1othorax j the upper part and sides are of a dark- 

 brown colour mottled with yellowish white ; a broad, irregular band of 

 the latter hue extends along the middle of the former, and comprises 

 a series of dark-brown, angular lines of various dimensions, having 

 their vertices directed forwards; the under part is of a dull yellowish- 

 white colour, with an obscure brown band extending from each 

 branchial operculum to the spinners ; and the moderately developed 

 sexual organs have a red-brown hue. 



Salticus exilis, n. s\u PI. XV ..fig. 3. 



Length of the female yg- in.; length of the cephalothorax yV, breadth yV; 

 breadth of the abdomen aV 5 length of an anterior leg | ; length of a 

 leg of the third pair jg. 



The legs are provided with hairs and spines, two parallel rows of the 

 latter occurring on the inferior surface of the tibia; and metatarsi of 

 the first and second pairs ; the first pair is rather the longest, then 

 the fourth, and the second pair slightly surpasses the third; each 

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

 small scopula ; the superior surface of the femora, the entire genua 

 and tibiae, and the extremity of the metatarsi of the anterior legs, 

 which are much the strongest, are of a da^'k red-brown hue, that of 

 the other parts of these limbs being brownish-yellow; the second, 

 third, and fourth pairs of legs are of a yellowish-white colour, with black 

 annuli and spots, and a longitudinal streak of the same hue on the 

 anterior surface of the femora, those on the second pair being the 

 least conspicuous. The palpi have a pale brownish-yellow hue, the 

 humeral joint being the palest. The cephalothorax is large, some- 

 what quadrilateral, sloping gradually at the base, projecting a little 

 beyond the fakes in front, and has a shallow indentation in the 

 medial line ; it is thinly clothed with hairs, those on the frontal mar- 

 gin being long and white, and is of a pale reddish-brown colour, the 

 cephalic region, a line passing thence along the middle, a broad band 

 extending from the lateral eyes, on each side, to the base, and the 

 narrow lateral margins having a dark-brown hue faintly tinged with 

 red. The minute intermediate eye of each lateral row is nearly equi- 

 distant from the eyes constituting its extremities. The falces are 

 short, conical, and vertical ; the maxilla; are straight, and enlarged 

 and rounded at the extremity ; and the lip is oval. These organs are 

 of a red-brown colour, the extremity and inner surface of the maxillse 

 and the apex of the lip having a brownish-yellow hue. The sternum 

 has a narrow oval form, and is of a brownish-yellow colour, with soot- 

 coloured margins. The abdomen is slender, oviform, sparingly 



LINN. PROO. — ZOOLOGY, VOL. X. ' 28 



