Di'i A. Giinther on new Species of Snakes. 413 XL VIII. — Sixth Account of new Sjjecies of Snakes in the Collection of the British Museum. By Albekt GuNTHER, M.A., M.D., Ph.D., F.R.S. [Plates XVII., XVIII. XIX.] The following .species of Ophidians have been added to the Collection of the British Museum since the publication of the last paper on the same subject in this Journal (July 1866, xviii. pp. 24-29). The total number of species in that collec-tion amounts now to 863, and that of the typical specimens to 330. In the following lists some of the species are marked with an asterisk (*) 5 of these, as well as of some others, I have added descriptions or shorter notices. I. List of Species which were formerly desiderata. *fc)ilybura grandis, Bedd. Anamallay Forest. Capt. Beddome. rubromaculata, Bedd. Anamallay Forest. Capt. Beddome. *Platyplectrurus trilineatus, Bedd. Anamallay Forest. Capt. Bed-dome. Elapomorphus acantbias, Krbyer. Sierra Leone. J. C. Salmon, Esq. Liophis (Diadopbis) Arnji, Kennicott. City of Mexico. Hr. Door-man. Tropidonotus nigrocinctus, Blyth. Pegu. Mr. Theobald. AhaetuUa punctata, Ptrs. Zanzibar. Dr. Kirk f. * dorsalis, Bocage. BengueUa. Dr. B. du Bocage. *Tragops javanicus, Steindachner. Pegu. Mr. Theobald. Pareas margaritopborus, Jan. Pegu. Mr. Theobald. *Boodon variegatus, Bocage. BengueUa. Dr. B. du Bocage and Mr. Monteiro. Hoplocepbabis fuscus, SteindacJmer. Van Diemeu's Land. G. KrefFt, Esq. Elaps gastrodelus, Bum. Sf Bibr. Chyavetas. Mr. Bartlett. II. List of the new Sjjecies procured and described since Jidy 1866. *Xenocalamus bicolor, Qthr. Zambeze. Museum of Cape Town. *Geopbis latifrons, Oihr. Pebas. Mr. Bates. * bicolor, Gthr. City of Mexico. Hr. Doorman. *Simotes amabiHs, Gthr. Arrakan Hills. Mr. Theobald. * cruentatus, Theobald. Pegu. Mr. Theobald. * Theobaldi, Gthr. Pegu. Mr. Theobald. *Ablabes bistrigatus, Gthr. Pegu. Mr. Theobald. *Cyclopbis nebulosus, Gthr. Nagasaki. Mr. Wbitely. t Besides tbe species mentioned in these Hsts, the following have heen sent by Dr. Kirk li-om Zanzibar : — Prosymna meleayris, Uriechis capensis (Smith), PsammopMs sibilans in three varieties, Buoihn lineatus, C'lutho arietans, Dasypeltis scabru.