Semiramis

I'd say "SEH-mi-rah-MEES" from:
Σ = (capital) sigma ≈ "S"
ε = epsilon ≈ "EH"
μ = mu ≈ "M"
ί = iota ≈ "I" before two consonants
ρ = rho ≈ "R" probably with a little trill
α = alpha ≈ "AH"
μ = mu (again)
ι = (another) iota (probably a little different and longer, often in association with)
ς = (lower case) sigma (at the end of mythologic names like "Anubis", "Artemis, "Osiris"...)

Pronunciation?