TRADE NAME(S) Rough Green Snake, Keeled Green Snake.   SCIENTIFIC NAME Colubridae; Opheodrys aestivus.   RANGE & ORIGIN From New Jersey to Kansas and southward to the Gulf coast.   ADULT SIZE 2 to 3 feet.   LIFE SPAN 5 to 8 years.   ENCLOSURE A 20 gallon long terrarium can house an adult pair.   SUBSTRATE Paper, soil, or coconut husk all work well.   TEMPERATURE & LIGHTING 70 to 80F degree gradient.   DIET, WATER & SUPPLEMENTS Gut loaded crickets and other insects.   CLEANING Spot clean daily with weekly full cage cleanings.