Mysterious numbers

[sasmon]

Ok, The best I could come up with was that it's a code for sex. This one gives me pause: 1.1.5 T.s.sirtalis, although I think maybe that third digit is "baby/I don't know"
Like 1 female, 1 male, 5 babies.

[SD Reptiles]

Exactly ;-)

1.1.5 means 1 male , 1 female and 5 unknown

[chris-uk]

Ok, The best I could come up with was that it's a code for sex. This one gives me pause: 1.1.5 T.s.sirtalis, although I think maybe that third digit is "baby/I don't know"
Like 1 female, 1 male, 5 babies.

Nearly got there on your own.