Species:

Calumma gastrotaenia

Short-nosed Chameleon

Some other names for this species:

Perinet Chameleon

Subspecies I've seen:
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Common Short-nosed Chameleon
C. g. gastrotaenia
Subspecies:

Calumma gastrotaenia gastrotaenia

Common Short-nosed Chameleon

Sighting:
October 7, 1996
Analamazaotra Special Reserve (Perinét), Toamasina province, Madagascar
Sadly, I didn't get a decent picture of this smallish and odd-looking chameleon (not that all chameleons aren't somewhat odd-looking).
Sighting:
April 23, 2007
Analamazaotra Special Reserve (Perinét), Toamasina province, Madagascar
Common Short-nosed Chameleon (Calumma gastrotaenia gastrotaenia)
Common Short-nosed Chameleon (Calumma gastrotaenia gastrotaenia)
Common Short-nosed Chameleon (Calumma gastrotaenia gastrotaenia)

These chameleons were definitely easier to discover at night. I don't think we saw one during the day on our whole trip, though we saw at least a dozen at night.

Here is a list of all the reptiles and frogs I saw on this trip to Madagascar.

Sighting:
April 27, 2007
Ranomafana National Park, Fianarantsoa province, Madagascar
Common Short-nosed Chameleon (Calumma gastrotaenia gastrotaenia)
Just after darkness fell, we encountered this small chameleon while looking for nocturnal wildlife. He seems to be trying to hurry out of the frame.