From alternate manufacturer Ms obviously. Have you seen other styles or genres of lizardmen available? I'd say there's a strong need for some with Egyptian mythological trappings. Sotek is a war God/crocodile and there are quite a few snakes. I also swear I saw some cuthulu/fishmen style Lizzie's somewhere.
I know d&d and pathfinder have some. This thread is also helpful: Fantastic Beasts and Where to Find Them
Reaper Minis makes a line of infantry Lizardmen called the Reptus Army. I bet they are mentioned in the thread Bowser created a link to.