The melleri were from Malawi - notice how prominent the horns were? I have been told that those melleri dont' get along with Tanzanian melleri at all. They look different enough that I wouldn't be surprised if they're different subspecies.
I always love to see good clips on chams. Thanks for posting this Nico. I wish Discovery would have an hour show on chameleons. You know, something one can really wrap their tail around!