No, it's why he called it the "Origin of Species" instead of the "Origin of Life". He was writing about how the various species arose (originated).
Actually, don't blame Darwin, blame the folks who abbreviate his actual title (I'm guilty as well). In the 19th century tradition of long-winded book titles, the *actual* title he gave his book was, "On The Origin of Species by Means of Natural Selection, or The Preservation of Favoured Races in the Struggle for Life".
That's more specific, and more to the point of what he was focusing his attention on.
The very last line in "Origin of Species" speaks clearly about his understanding that the origin of life itself was distinct from the evolution that has taken place since:
"There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved."(Incidentally, that last word in his book is the *only* time he uses the word "evolved" or "evolution" in the book. He probably didn't intend for that word, which he was using generically, to become the name/label for his theory, but there you have it.)