captured in Rio Janeiro. 353 



Salticus proruptus. 



Length of the female ^rd of an inch ; length of the cephalo- 

 thorax -~^' } breadth £; breadth of the abdomen ^; length of an 

 anterior leg ^ ; length of a leg of the third pair ^. 



The legs are robust, and provided with hairs and sessile 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 the longest, then the fourth, and the third pair is the 

 shortest ; each tarsus is terminated by two curved, minutely 

 pectinated claws, below which there is a small scopula; the co- 

 lour of the femora is brownish black, and that of the genual 

 joint and tibia of the first and second pairs dark reddish-brown; 

 the genual joint and tibia of the third and fourth pairs have a 

 brownish-red hue; the former is marked with dark reddish 

 brown at its extremity, particularly on the sides and inferior 

 surface, and the latter has a dark reddish-brown annulus at its 

 termination ; the metatarsi and tarsi of all the legs have a pale 

 brownish-red colour, and the former have a small reddish-brown 

 annulus at their extremity. The palpi, which are rather long, 

 have a pale brownish-red hue, and are without a claw at their 

 extremity. The cephalothorax is large, glossy, somewhat quadri- 

 lateral, sloping abruptly at the base, and projecting a little be- 

 yond the falces in front ; it is of a very dark brown colour, faintly 

 tinged with red, an-d the frontal margin is fringed with long 

 yellowish-white hairs. The minute intermediate eye of each 

 lateral row is rather nearer to the anterior than to the posterior 

 eye of the same row. The falces are powerful, conical, and ver- 

 tical; the maxillse are straight, and enlarged and rounded at the 

 extremity ; the lip is oval, and slightly hollowed at the apex ; 

 and the sternum is oval. These parts are of a dark reddish- 

 brown colour, the sternum and the extremity of the maxillae 

 being much the palest. The abdomen is oviform, pointed to- 

 wards the spinners (which are prominent), moderately convex 

 above, and projects over the base of the cephalothorax; it is 

 thinly clothed with hairs, and of a dark brown colour, the sides 

 being rather the palest ; on each side of the medial line of the 

 upper part there is a series of minute spots, consisting of white 

 hairs, disposed in pairs, those of the penultimate pair, which 

 are much the largest, being of an oblong-oval form, and inclined 

 towards each other. 



Salticus delicatus. 



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

 thorax 2 3 q j breadth T 'y ; breadth of the abdomen ^ ; length of 

 a leg of the third pair j ; length of a leg of the second pair ^. 



The minute intermediate eye of each lateral row is nearly 

 Ann. # Mag. N. Hist. Ser. 3. Vol. x. 24 



