The Squamates are one of the very few well proven groups of animals. However, their provings tend to focus on the better known and more prominent venomous snakes, rather than the less prominent snakes, and lizards.
Most notably, the two species of Tuatara, Sphendon punctatus and Sphenodon guntheri, the two remaining species of the ancient Rhynchocephalian lineage, remain unproven. Their addition to the materia medica would be most welcome.
In terms of the Squamata, proving work has been inconsistent, with much needing to be done to complete our understandings of the various groups and families.
Dibamidae have no remedies either potentised or proven at this date, any species would be very useful to the profession. Gekotta have only a single case, with not proven members. Sciniformata have only a single meditative proving. Lacerta are also very poorly represented in the material medica. Any provings would be well received. Particularily interesting would be some species that reproduce parthengonically, such as Zootoca vivipara.
Within the Toxicofera, the Iguania and Anguimorpha have only a few provings each, both needing much more work for an extensive understating to emerge.
The snakes are one of the few over proved groups within the animal kingdom. However the snake provings have focused on the larger families, the Elapidae, Viperidae and to a lesser extent the Booidae. Even within the caenophida the families Homolopsideae, Patreatidae, Vipidae, Lamprophiidae and Xenodermatidae have no provings or potentised specimens whatsoever. The Colubrae have only a few proven remedies. Provings of any of these snake would serve the profession well. However, snake provings in general should be seen a s a low priotiry, as in this rare case, we seem to have enough remedies from this class of animals.
Image Source: https://commons.wikimedia.org/wiki/File:Green_Mamba_cropped.JPG