100 Mr. J. Blackwall on recently discovered Spiders. 



spots, and are disposed on the anterior part of tlie cephalothorax 

 in two transverse rows ; the four intermediate ones nearly form 

 a square; the two anterior ones are the largest of the eight, and 

 are placed on a slight protuberance; the eyes of each lateral 

 pair, which are the smallest, are seated on a minute tubercle, 

 and are almost in contact. The falces are powerful, conical, 

 vertical, and armed with teeth on the inner surface; the legs 

 are long, slender, and provided with hairs ; the first pair is the 

 longest, then the second, and the third pair is the shortest; the 

 palpi are slender, and have a slightly curved claw at their ex- 

 tremity. These parts have a pale brownish-yellow hue. The 

 maxillse are slightly divergent, and increase in breadth from the 

 • base to the extremity, which is somewhat angular on the outer 

 side; and the lip is semicircular and prominent at the apex. 

 These organs are of a brown colour tinged with yellow, the base 

 of the lip being the darkest. The sternum is heart-shaped, 

 glossy, supplied with some long hairs, and has a black hue. 



The male is smaller than the female, but resembles her in 

 colour. The cubital and radial joints of its palpi are short, the 

 latter being rather the larger; the digital joint is oval, with a 

 process at its base curved outwards; it has a yellowish-brown 

 hue, is convex and hairy externally, and concave within, com- 

 prising the palpal organs, which are well developed, not very 

 complex in structure, convex, glossy, and terminate in a point 

 that extends beyond the extremity of the joint : the colour of 

 these organs is yellowish brown. The convex sides of the digital 

 joints are directed towards each other. 



One male and three females of this Tetragnatha, which be- 

 longs to Walckenaer's second family of the genus, the Coadunata, 

 were captured in the Island of St. Nicholas. 



Tribe Senoculina. 



Family ScytodidtE. 



Genus Scytodes, Latr. 



Scytodes pallida. 



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



cephalothorax -^V, breadth -^V; breadth of the abdomen -^\', 



length of a leg of the second pair \ ; length of a leg of the third 



pair-T^. 



The eyes, which are small and disposed in pairs on the ante- 

 rior part of the cephalothorax, are seated on black spots; those 

 of each lateral pair are placed obliquely on a slight tubercle, and 

 are almost in contact, the anterior ones being the largest of the 

 six; the eyes of the anterior pair are situated transversely, in 

 advance of the lateral pairs, high above the prominent frontal 



