
The Erycinae are a subfamily of nonvenomous snakes, commonly called boas, found in Europe, Asia Minor, Africa, Arabia, central and southwestern Asia, India, Sri Lanka, and western North America. Three genera comprising 15 species are currently recognized. This is a subfamily of stout-bodied snakes, all of which are competent burrowers. The largest...
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http://en.wikipedia.org/wiki/Erycinae

(from the article `boa`) The true boas are divided into two subfamilies, Boinae and Erycinae. Boinae includes the boa constrictor (Boa constrictor), tree boas (genus ...
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http://www.britannica.com/eb/a-z/e/42

Erycinae is the 'Sand Boas' subfamily of reptiles of the family Pythoninae, suborder Serpentes (snakes). The subfamily contains some 14 species in three genera.
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http://www.probertencyclopaedia.com/browse/BE.HTM
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