...the unconscious which according to evolution favors survival and survival of the species is favored even higher i would think, so that at times the unconscious may make a move that trumps ego drives and may lead to an action that puts the "individual" in harms way(kills) but it does so for the good of the larger whole or the "species"
I don't wish to be a debbie downer...
Natural selection is about surviving to reproduce. The two are intrinsically related, it's not merely about survival.
I'm pretty sure that natural selection does not support the notion that survival (and ongoing reproduction) of the species is more favored than survival (and reproduction) of the individual. In fact, I think it allows for just the opposite, that evolution does not happen to bring positive adaptations to a species when by doing so it has no direct reproductive benefit to the individual.
(NOTE: You are of course talking about physcology instead of biolgy, which I'm not so sure extrapolating from bilogical evolution explainations for physcological behavior is always apropos.)
In fact, the opposite can and does happen. Something that brings a direct benefit to the individual (reproductively) can be detrimental to the whole of the species. For example, lions do hunt in groups (this insures survival and increases chances of reproduction), yet when intruding males displace resident males from a social group, the intruders kill all the young ones. Is such behavior in latter situation beneficial to the species? No. It could even lead to causing the species to risk extinction if endangered. But it does have a direct reproductive benefit to the individual.
I bring this up since your premise might be based on a false assumption. Altruistic behavior does happen in the framework of natural selection, but it always has strings attached, that helping or sacrificing, ultimately increases the individual's chances of surviving and reproducing.