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Show 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 occasion, two are from Caffraria, sent to me by Mr. Mansel "Weale ; one from St. Helena, received from Mr. Melliss 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, pl. xiii. fig. 6) in the genus Olios. The example from which the description and figures (I. 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 Drassida must be established for its reception. Eight other new genera are also here characterized, belonging to the families Drassidce, Theridiida, Pol-tida, and Salticida. 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 Caffraria (posted, pp. 436, 437). Fam. DRASSIDA. X E R O P I G O , g. n. (nom. propr.). Cephalothorax broad-oval, truncated in front. The lateral marginal constrictions are strong; and the profile-line 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, I, 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 disposed on the third and fourth pairs. Beneath the tarsi of the first P R O C ZOOL. S O C - 1882, No. XXIX. 29 |