428 Rev. 0. P. Cambridge on new Species of Spiders 



above, with longitudinal series of more or less distinct darker 

 spots ; belly checkered with black. 

 Hab. Bahia*; Cayenne. 



4. Helicops angulatus. 



Coluber angulatus, L. Mus. Ad. Fried, p. 23, pi. 15. 

 Natrix aspera, Wagl. Serp. Bras. tab. 13. 

 Helicops angulatus, Wagl. Syst. Amph. p. 171. 

 Uranops angulatus, Gray, Catal. p. 68. 



Scales in nineteen rows, strongly keeled anteriorly and posteriorly. 

 Occipitals short, as long as the vertical ; two pairs of chin- 

 shields. Brownish or brown, generally with a series of lai'ge 

 rhombic spots extending on the sides and on the belly. 



Hab. From Venezuela to the southern parts of Brazil. 



5. Helicops polylepis. 



Scales strongly keeled anteriorly and posteriorly, in twenty- six 

 rows. Occipitals short; two pairs of chin-shields. Brown, 

 with series of indistinct darker spots. 



Hab. Upper Amazon. 



XLIX. — Descriptions of ten new Species of Spiders lately dis- 

 covered in England. By the Rev. O. P. Cambridge, B.x\. 



Tribe Octonoculina. 

 Family Drassid^. Genus Drassus. 

 Drassus prailongipes. 

 Size small ; general colours olive- brown and yellow ; abdomen with 

 several transverse angulated yellow lines on the hinder half ; 

 actual length of legs very great, especially of the first and fourth 

 pairs ; shape of legs, jjarticularly of the femoral joint, flattened 

 or strap-shaped ; digital joint of palpi small; palpal organs 

 simple ; eyes nearly uniform in size ; maxillce without any in- 

 ward curvature. 



Adult male. — Length | of an inch ; length of cephalothorax 

 y^g, breadth -^q-, relative lengths of legs 4, 1, 2, 3; actual 

 length of longest (or fourth pair) \ of an inch. 



Cephalothorax oval; front part squared off, and slightly com- 

 pressed on the sides ; hinder part, near the abdomen, consider- 

 ably wider and rather more elevated than the front part. Some 

 slight furrows or indentations correspond with the insertions of 

 the legs, and converge towards the most elevated part. Its 



* Several fine specimens have been sent from that province by Dr. O. 

 Wucherer. 



