1882.] REV. O. p. CAMBRIDGE ON NEW ARANEIDEA. 423 



1 . On new Genera and Species of Araneidea. 

 By the Rev. O. P. Cambridge, M.A., C.M.Z.S., &c. 



[Eeceived April 29, 1882.] 



(Plates XXIX.-XXXI.) 



Of the sixteen species of Spiders described on the present occa- 

 sion, two are from Caffraria, sent to me by Mr. Mansel Weale ; 

 one from St. Helena, received from Mr. MelHss some years ago ; 

 two from Ceylon, contained in the fine collection made for me by 

 Mr. G. H. K. Thwaites ; and the rest (11 species) from a collection 

 made on the Amazons by Professor Traill. All are, so far as I am 

 able to ascertain, new to science, excepting the Spider from St. 

 Helena, erroneously included by myself (P. Z. S. 1869, p. 538, pi. 

 xlii. fig. 6) in the genus Olios. The example from which the 

 description and figures (/. c.) were made was a very misleading 

 one, having been pinned and dried, some important generic parts 

 injured, and its legs extended laterally, in what I find since to be a 

 quite unnatural position. Specimens of this Spider received more 

 recently have convinced me that a new genus of Brassidce must be 

 established for its reception. Eight other new genera are also here 

 characterized, belonging to the families Brassidce, Theridiidce, Pol- 

 tidce, and Salticidcje. 



One other point of interest only need be noted here ; and that is 

 the discovery, for the first time in South America, of a species of the 

 curious four-eyed genus Miagrammopes, Cambr. (posted, p. 435. 

 The genus was first characterized from Ceylon (Linn. Soc. Journ. 

 X. p. 398). Since then it has been found at Sydney, N. S. W., 

 Rodriguez, Zanzibar, and now also (2 species) in Caflfraria {posted, 

 pp. 436, 437). 



Fam. D RAssiD^. 

 Xeropigo, g. n. (nom. propr.). 



Cephalothorax broad-oval, truncated in front. The lateral mar- 

 ginal constrictions are strong ; and the profile-hne forms a tolerably 

 even curve from the upper part of the clypeus to the posterior 

 margin, with a slight dip or depression at the thoracic junction. 

 The height of the clypeus is rather less than half that of the facial 

 space. 



Eyes 8, in two curved rows, the convexity of the curve directed 

 backwards; the anterior row shortest; they are of moderate size; 

 those of the fore central pair considerably the largest of the eight. 



Legs moderately long, not differing greatly in length, but strong, 

 4, ], 2, 3. They are furnished with hairs, bristles, and spines ; 

 those beneath the tibiae and metatarsi of the first and second pairs 

 are disposed in two longitudinal parallel rows, but irregularly dis- 

 posed on the third and fourth pairs. Beneath the tarsi of the first 



Proc. Zool. Soc— 1882, No. XXIX. 29 



