Very cool. I tried looking them up, but just couldn't find much. Surprisingly enough, wikipedia didn't show up in the search. I thought maybe you forgot to add the picture, now I see. Ha. Silly me.
Actually the green snake is a Red Tailed Green Ratsnake, Gonyosoma exycephala, if memory serves me right. They can get rather large and usually are not very friendly. Kelli and I have bred them in the past. Very cool snakes and they come in different colors depending on their exact locality. They are an Asian species BTW.