Xenocalamus bicolor, or the slender quill-snouted snake, is a species of venomous rear-fanged snake in the family Atractaspididae. It is endemic to Africa.
Continent: Africa
Distribution: Angola, W?/S Democratic Republic of the Congo (Zaire), Namibia, Botswana, Republic of South Africa (N Cape, W OFS, Transvaal), Mozambique, N Zimbabwe bicolor: Namibia, W/C Botswana, Republic of South Africa (N Cape Province, W Orange Free State), N Zimbabwe, C Mozambique australis: Transvaal (Waterberg District) lineatus: S Mozambique, NE Transvaal, SE Zimbabwe machadoi: Angola, W Zaire