It looks dumb. Don't set yourself up for it. A species is a group of living things reproductively isolated from other groups. The plural of species is species. Specie means money, specifically, coined money.
Biceps is the singular.
Bicepses is the plural, though you can use biceps if you insist. There is no such thing as a bicep. Doing either causes people to find it awkward to discuss your book. Be very careful with them. If you're good at them, terrific.