Differences in Boas. Columbian, Suriname, Peruvian? Can someone explain?

I would like to know what are the noticable differences among the red tail boa genus.

In simple terms BG will try. Colombian are considered BCI, and the others are BCC. The BCC have brighter red tails and more distinct saddles. Suriname's usually have "widows peak" saddles. A Colombian will have more black mixed with it's red tail. The BCC can grow larger than the BCI, although BG personally has some monster Colombians.

Your best bet would be to google them and look at pics. It's hard(even for Big Gunns) to explain without pics.

Read here (There are pictures also):

http://www.riobravoreptiles.com/index.htm