Regarding your second question, whether a person who is a Negro, Chinese, Indian, etc. are they different species of life making up the 400,000 species. Yes, so far their body is concerned. Your question whether woman in each one of these species is another separate species, no, the species means both man and woman of the same type. Of course, strictly speaking the woman is taken differently, otherwise how would Krsna say striyo vaisyas tatha sudras.
Letter to Madhudvisa Swami, 10 November, 1975