b1r2 is correct.

I have talked to a breeder, I will leave him nameless, he mentioned that both Rich Ihle's "Salmons" and Jeff Gee's "Hypos" are both off of the same original founding female from Ihle.

I am not positive about this, as it is also believed they are two seperate lines, although 100% compatible.

These boas are Hypomelanitistic, not just in less black but a true genetic mutation. They are a co-dominant trait, that works as a heterozygous animal for the homozygous or dominant "Super" Salmon/Hypo.

Basically the only diferrance is in color, the majority of salmons tend to have more pink and orange, while the hypo has more red (there is also the orange tail line).

Both of these morphs are really the same, they have just been line bred differantly. In Boa Contrictors they have four pigment layers of melanin, and in the hypos they are "lacking" 3 (as described by Jeff Ronne in Pastel Dream definition, pastels lack 2), in other words, you can't see them.
DNA testing would later reveal if they are there and not expressed or if they are truly missing.

You can use either to create a Sunglow.

I believe there are a leat two other lines from wild origin of hypo boas, one is much like the ones we see, I do not remember the founder name. There is also a new line produced in captivity for the first time this year and has yet to be definately proven, the "Silver" Hypos.

I hope this helps.

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