spring adder, noun phrase
Obsolete. An unidentified species of snake found at the Cape.
1790 W. Paterson Narr. of Four Journeys 164The Spring Adder is a very dangerous but uncommon snake; it is jet black, with white spots, from three to four feet long, and proportionately thick.
1819 G.M. Keith Voy. 70The spring adder, very dangerous, but not common...Jet black with white spots.
An unidentified species of snake found at the Cape.

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