208. NETTAPUS AURITUS (Bodd.): Gurney, _t. c._ p. 336. African Dwarf Goose. _a._ ♂, _b._ [♀]. Not labelled. 209. ANAS XANTHORHYNCHA, Forst.: Gurney, _t. c._ p. 342. Yellow-billed Duck. _a._ ♀ Near Pretoria, June 18, 1873. Iris bright brown. Grit and vegetable matter in stomach. 210. PÆCILONETTA ERYTHRORHYNCHA (Smith): Gurney, _t. c._ p. 339. Red-billed Teal. _a._ ♀ Mopani Pan, near Ramaqueban River, March 16, 1874. Iris dark hazel; bill (I think) brown on top, dull orange on sides; legs black. Caught by dog. They say this is the common small duck here. _b._ ♂ Mopani Pan, near Ramaqueban River, November 5, 1874. Iris bright brown; bill pink with a lilac tinge, a dark lilac stroke on the top; legs slate-colour, inclining to lilac. Out of four shot, I think three were males and one a female, but the plumage differed very little. The boy found a curious swelling in the windpipe of two, which he says were males. He said the female had not got it. Family PELECANIDÆ. 211. GRACULUS AFRICANUS (Gm.): Gurney, _t. c._ p. 370. Long-tailed Cormorant. _a._ Not labelled. 212. PLOTUS LEVAILLANTII, Licht.: Gurney, _t. c._ p. 367. Le Vaillant’s Darter. _a._ Meriko River, November 1873. Family PODICIPIDÆ. 213. PODICEPS MINOR, L.: Gurney, _t. c._ p. 347. Little Grebe. _a._ Tchakani Vlei, May 15, 1874. Iris yellowish hazel, or rather deep raw sienna or amber; upper mandible dusky black; base and lower mandible orange; legs and feet black. _b._ ♀ Tamasancha, December 10, 1874. Bill black, tipped with white, and spotted at base with white; legs black, fringed on webs with white. Beetles in stomach. [Illustration: App.Pl.A. J.G.Keulemans lith. Hanhart imp. SAXICOLA SHELLEYI.] [Illustration: App.Pl.B. J.G.Keulemans lith. Hanhart imp. BRADYORNIS OATESII.] III. HERPETOLOGY. BY ALBERT GÜNTHER, M.A., Ph.D., M.D., F.R.S. (PLATES C, D.) _DESCRIPTIONS OF TWO NEW SPECIES OF SNAKES FROM SOUTH-EASTERN AFRICA._ Family COLUBRIDÆ. CORONELLA TRITÆNIA, sp. n. (Plate C.)