Yes, I can see where you are referring to in those pictures. This is actually a very good and educational experience for those interested in weidersheimi species.
I think I was trying to make it simple, too simple

. And you are correct, the gular crest is the area I should have made reference to. By the time I'm done observing and caring for these beautiful chameleons, along with learning the scientific and physical anomalies of this species and sub-species, I should become very knowledgeable in the Chameleo T. weidersheimi chameleons

.
This is all very fascinating to me really, and only increases my interest in learning more. This is all part of the fun of getting something new and watching new behaviors of various species (such as the Rhampholeon nchisiensis, I have found love to forage and dig in the soil - very fascinating to watch). As well as learning the variations of physical differences of chameleon sub-species that are so extraordinarily subtle in their physcial differences that one must look very closely to see the variation. I almost wish I had one that wasn't a perreti to be able to see by the eye the differientiation between the two. All in good time.
Panther chameleons are so much easier to identify! Look at barring and color and it's very evident with the eye. Whereas the Chameleo T. weidersheimi & perreti species are so very subtle, one must look extremely closely to notice the difference.
The female layed 2 eggs last night, and it became so late and she was so tired she went to the plant in her enclosure to get some rest and sleep for the night. She still isn't finished laying her eggs. I am hoping the rest through the night is enough to not have given her too much exhaustion in order to complete laying her clutch.
By the time I'm done I might have to change my Prism Chameleon name from "specializing in panther chameleons" to adding the weidersheimi species as well

. In all seriousness though, I know there is still much to learn, as these little guys are not readily found or captive bred. I look forward to working with them, observing them, and trying my best to make them a successful captive bred species as well.
Did you say to me Chris in an email that the perreti sub-species were fairly rare compared to the Chameleo T. weidersheimi?