Natural History/discriptions/behavior can be found in "Reptiles and Amphibians of Madagascar" book. They behave somewhat like African Sandfish skinks: insectivorious/diurnal/terrestrial but spend great deal of time burrowing or swimming in sandy substrate. I did come across a good caresheet posted on the internet>

http://people.qualcomm.com/ntenny/tracheloptychus-cae.html

this caresheet should cover basics and tips.