captured in Rio Janeiro. 355 



colour, tinged with red, the lip being the darkest. The sternum 

 is almost circular, and has a pale yellowish hue. The lateral 

 eyes are seated on black spots, the minute intermediate one of 

 each row being much nearer to the anterior than to the posterior 

 eye of the same row. The legs are moderately robust, provided 

 with hairs and sessile spines, two parallel rows of the latter 

 occurring on the inferior surface of the tibiae and metatarsi of 

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

 the first, and the fourth pair is the shortest ; each tarsus is ter- 

 minated by two curved claws, immediately below which a small 

 scopula is situated; the base of the femur of the first, second, 

 and third pairs has a dull yellowish colour ; the extremity of the 

 joint and the tibia and base of the metatarsus of the same limbs 

 have a red-brown hue, and the hue of the extremity of the meta- 

 tarsus, with the tarsus, is yellowish-brown ; the colour of the 

 posterior legs is pale dull yellow. The palpi are long, slender, 

 and of a yellowish-white hue, the digital joint having a tinge of 

 brown; the cubital and radial joints are long and somewhat 

 clavate, and the latter, which is the shorter, has a large pointed 

 apophysis at its extremity, on the outer side ; the digital joint is 

 subcylindrical, convex and hairy externally, compact at the ex- 

 tremity, but has a cavity near the base, on the under side, which 

 comprises the palpal organs ; these organs are moderately deve- 

 loped, not very complicated in structure, with a curved, pointed, 

 black spine at their extremity, and are of a reddish-brown colour. 

 The abdomen is oviform, somewhat depressed and pointed to- 

 wards the spinners (which are prominent), convex at the anterior 

 extremity, and projects a little over the base of the cephalothorax; 

 it is sparingly clothed with hairs, and the upper part, which has 

 a black hue, comprises four minute white spots, disposed in a 

 rectangular figure whose ti'ansverse breadth is the greatest, and 

 in the medial line, between these spots and the spinners, there 

 is a larger white spot ; these spots consist of short scale-like 

 hairs ; the anterior extremity, contiguous to the cephalothorax, 

 the sides, and under part are of a yellowish- white colour, two 

 longitudinal brownish-black bands, which are united near the 

 spinners, occurring on the last ; the colour of the superior spin- 

 ners is dark brown, and that of the inferior pair yellowish-brown. 

 I have given to this spider the specific name of cephalicus 

 provisionally, as it may possibly be the male of Salticus delicatus, 

 though it differs from it in many marked particulars. 



Salticus properus. 



Length of the male J-th of an inch ; length of the cephalo- 

 thorax jy,- breadth y 1 ^ ; breadth of the abdomen -— ; length of 

 an anterior leg \ ; length of a leg of the second pair ^. 



24* 



