84 Mr. J . Blackwall on recently discovered Spiders 



tibiae, and the metatarsi are of the same hue; each tarsus is 

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

 scopula. The palpi are short, and of a pale yellow colour, the 

 axillary joint, the base of the humeral joint, and the outer sur- 

 face of the radial joint having a brown-black hue ; the radial 

 joint projects a curved, finely pointed, black apophysis from its 

 extremity on the outer side, which is directed obliquely forward 

 and outward ; the digital joint is oval, convex, and hairy exter- 

 nally, concave within, comprising the palpal organs, which are 

 moderately developed, with a black filiform spine curved from 

 the outer side round the base and inner side, and have a pale 

 brownish- red hue. The abdomen is oviform, pointed at the 

 spinners (which are prominent), convex above, and projects a 

 little over the base of the cephalothorax ; it is densely covered 

 with adpressed hairs, and has a broad yellow-brown band in the 

 medial line, which tapers to the spinners ; on each side of this 

 band there is a longitudinal band composed of white hairs, which 

 overlie and almost conceal a black band whose outline is some- 

 what, irregular near its posterior extremity, on the inner side ; a 

 narrower black band passes along the lower part of each side, 

 and the space between these black bands has a yellow-brown 

 hue; the under part is of a pale dull -yellowish colour, with a 

 large oval soot-coloured spot in the middle, and the spinners 

 have a dark-brown hue. 



Captured in the Island of St. Nicholas. 



Salticus sedulus. 



Length of an immature male \t\\ an inch ; length of the ce- 

 phalothorax -i^, breadth -^ ; breadth of the abdomen -±r ; length 

 of a posterior leg -^ ; length of a leg of the second pair -^ . 



The cephalothorax is glossy and somewhat quadrilateral, 

 sloping abruptly at the base, and gradually to the front, which 

 projects a little beyond the base of the fakes ; it is of a yellowish- 

 brown colour, the cephalic region, the narrow lateral margins, 

 and a fine parallel line situated immediately above them having 

 a black hue ; there is a broad, longitudinal, brown band on each 

 side of the medial line, and the frontal margin is densely clothed 

 with long white hairs, which extend to the sides. The fakes 

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

 enlarged and rounded at the extremity ; and the lip and ster- 

 num are oval. These parts have a yellowish-brown hue, the 

 fakes, maxillae, and lip being the darkest at the base ; and the 

 sternum, which is the palest, has brownish-black lateral margins. 

 The legs are 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 fourth 



