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| | SNAKES - Online Information article about SNAKES |
 | | Colubridae—wherein he was followed by Cope, as mentioned above—and separating therefrom the Peropoda or Boidae, he has produced a logically-conceived system, by far the best hitherto proposed. |
 | | Boulenger's phylogenetic system stands as follows: Viperidae Uropeltidae C. Opisthoglypha C. Proteroglypha Amblycephalidae Ilysiil ae Xenopeltidae Colubridae Aglypha I I I Typhlopidae Boidae Glauconiidae This means that the Boidae retain most See also: |
 | | Likewise primitive, but in various respects degraded, mainly owing to burrowing habits, are the Typhlopidae with the Ilysiidae, and Uropeltidae as a terminal branch, and on the other See also: |
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