440 REV. O. p. CAMBRIDGE ON NEW ARANEIDEA. [May 16, 



ocular area). The occiput, which is paler than the rest, is clothed 

 with greyish hairs, of which some in the centre are quite white ; 

 there is also a patch of white hairs behind each of the large fore 

 central eyes, a smaller one almost in a hne between the posterior pair 

 of eyes, with a few similar hairs round these last. The thorax has a 

 narrow lateral sub marginal band (on each side) of white hairs ; and a 

 dense row of similar hairs projects prominently forwards just above 

 the lower margin of the clypeus. 



The legs are yellow-brown, those of the first pair, excepting the 

 tjrsi and metatarsi, much the darkest ; the others are obscurely 

 annulated with dark yellow-brown. The spines (on the first two 

 pairs) are 4 (in two pairs) beneath the metatarsi (these are the 

 strongest), and 6 (in three pairs) beneath the tibiae. On the third 

 and fourth pairs of legs the spines are more numerous, but less 

 strong and more irregularly placed. 



The palpi are moderately long ; the cubital joint is of a clavate form, 

 double the length of the radial, and has some whitish hairs on its 

 anterior surface. The radial joint has a strong, but short, obtuse 

 prominence behind, and a curved, shining, tapering, sharp-pointed 

 apophysis on its outer side. The digital joint is of moderate size 

 (but longer than the cubital), and of an oval form ; the palpal organs 

 are simple, not very prominent, and (apparently) closely surrounded 

 with a strong black spine. 



The falces, maxilltE, labium, and sternum are yellow-brown ; the 

 falces are the darkest, and have, at their extremities on the inner side, 

 two short parallel rows of small but distinct denticulations, within 

 which the fang lies when at rest. 



The abdomen is dark brownish black, varying to deep brown in 

 parts ; on the upperside two large, somewhat crescent-shaped paler 

 markings occupy each side of the anterior portion, and are clothed 

 with shining white hairs ; these are obliquely crossed at their hinder 

 ends by a similarly clothed pale stripe, thus giving the appearance 

 of a tolerably perfect large white circle occupying the whole fore 

 half of the upperside of the abdomen ; the posterior half is marked 

 with several ordinary pale angular bars or chevrons, thickly clothed 

 with whitish hairs. The sides and underside are pale dull yellowish 

 brown, the former obscurely and obHquely marked with dark 

 brown. The spinners are small, but of tolerable and equal length a nd 

 prominent. 



A single example, hut in very perfect condition, was received in 

 Mr. Traill's Amazon collection. 



List of Spiders described. 



Xernpigo (g. n.) fridentiger, Cambr., St. Helena, p. 424, PI. XXIX. fig. 1. 

 Arachosia (g. n.) anyphanoides, sp. n., Amazons, p. 426, PL XXIX. fig. 2. 

 Coleosoma (g. n.) blandum, sp. n., Ceylon, p. 427, PI. XXIX. fig. 3. 

 Sphecozone nigra, sp. n., Amazons, p. 428, PI. XXIX. fig. 4. 

 Achma (g. n.) insignis, sp. n., Amazons, p. 428, PI. XXX. fig. 5. 

 Chrysso (g. n.) albomacidafa, sp. n., Amazons, p. 429, PI. XXX. fig. 6. 

 ? quadrata, sp. n., Ceylon, p. 430, PI. XXX. fig. 7. 



