Well, I've reviewed Venes and Glaw's description fairly extensively. The labial and infralabial counts check out on all the snakes indicating that they are madagascarensis. The siblings to this purple animal are all getting a greenish cast, although easterns don't apparently always become green. The diagnostic character is that the voltany never have a greenish color, as opposed to the madagascarensis that usually, (but not always), have a greenish color. The authors warn that their coloration descriptions are based on a very small number of animals and may not be reliable.

I'm not sure how else to to confirm (or refute) the ID. I'm planning to call MVZ and Cal Academy at some point to review their specimens, but based on the original subspecies descriptions, these things are all easterns.

If anyone has any other "subspecies" characters I can use, I'd appreciate finding out what they are.

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