Dumeril's ground boa question

[BFT12890]

This may be a dumb question but, I was watching swamp wars on animal planet, and they found one that had escaped/been released. first thing i said to myself was it was a dumeril's, but the guy on the show called it a Madagascar.

I know they are from Madagascar, but my question is, is there a difference between a dumeril's ground boa and a Madagascar ground boa if so, how can you tell the difference?

Thanks!