Hoppy, you're just like me.. nothing meets your standards!
But, who said this was a black tail? and just what is a Black tail (other than C. molossus)? I said this was a black Peru boa and it obviously is. It is a BCC of Pucallpa origin.
BCL is Boa C. longicauda.. which are predominantly black but not the same thing, nor is 'black-tailed' the best description for longicauda.. the subspecific name refers to the above average sub-caudal count.. the people who described longicauda wanted to give it a name that refers to the fact that male longicauda probe to many more scales than other subspecies, but no subspecies name like magne-hemipene or some other was considered acceptable. I've got a nice litter of longicauda here now, very different animals.
Hope this clears that up for you..
Gus