Never heard of morphs for Teratoscincus but there are a number of species in the genus. T.Roborowski are slick animals, the smallest, a pair can be kept in a 10 gal set up. Deep sand and lots of rocks are a must. They are little bulldozers, not particularly nocturnal and very active. Quite fun to watch.
Chondrodactylus A. Angulifer come in a supposed subspecies Chondrodactylus A. Namibensis, but I have yet to talk to anyone or see a picture that shows the difference between the two. Not really sure whether a taxonomic subspecies or regional pattern variation. Common names, Namibian sand gecko, bull dog gecko. Another digger that needs deep sand and a place to create a burrow. Not aggressive but packs a POWERFUL bite. When cornered or restrained, it will bite instead of struggle, beware. Another nice animal. I have a care sheet up on my WEB site.

Rhac 'n Roll Reptiles
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Rhac 'n Roll Reptiles http://home.netcom.com/~deadrats/h.htm