An all black Naja nigricollis.
Date 7 July 2009
Source http://www.flickr.com/photos/lucaboldrini69/4281952215/
Author Luca Boldrini
Source: https://commons.wikimedia.org/wiki/File:N.nigricollis.jpg

The black-necked spitting cobra (Naja nigricollis) is a species of spitting cobra found mostly in sub-Saharan Africa. The species is very common and is widespread through much of sub-Saharan Africa and is found in western, eastern, central, and parts of southern Africa.
Order: Squamata
Suborder: Serpentes
Family: Elapidae
Genus: Naja
Subgenus: Afronaja
Species: Naja nigricollis Hallowell, 1857
Synonyms:
Naja nigricollis atriceps Laurent, 1955
Naja nigricollis occidentalis Laurent, 1973
Naja crawshayi Broadley & Cotterill, 2004