LOL. Good stumper, sorry about the i lol... I'm a slacker! Unfortunately I haven't had much time to go through the snakes of S. America... so the S was a clue that made it easy enough to wittle down.
For all you lizard people.
I apologise if any of these are too easy or too difficult... because I would have no idea how well known a lot of these lizards are... A lot of the time they are new to me!
Don't worry about the spelling davo. It's just that some of the biology students fail their courses for not spelling the names properly, so I learned that quite quickly, even if I am not majoring in it.