Snakes

Boidae Colubridae
 * Eryx conicus (2n=34, ZZ, ZW, homomorphic sex chromosomes)
 * Boiga forsteni (2n=36, ZZ, ZW, W larger than Z)
 * Boiga trigonata (2n=36, ZZ, ZW, W larger than Z)
 * Cerberus rhynchops (2n=36, ZZ, ZW)
 * Coluber fasciolatus (2n-=36, ZZ, ZW, heteromorphic sex chromosomes of similar size)
 * Gerardia prevostiana (2n=36, ZZ, ZW)
 * Lycodon aulicus (2n=36, ZZ, ZW)
 * Natrix stolata (2n=36, ZZ, ZW)

Elapidae Hydrophiidae
 * Ptyas mucosus (2n=34, ZZ, ZW, homomorphic sex chromosomes)
 * Naja naja naja (2n=38, ZZ, ZW, homomorphic sex chromosomes)
 * Naja naja kaouthia (2n=38, ZZ, ZW)
 * Hydrophis cyanocinctus (2n=33 in females, ZZ, ZW1W2)
 * Hydrophis fasciatus fasciatus (2n=35 in females, ZZ, ZW1W2)


 * Hydrophis ornatus ornatus (2n=32, ZZ, ZW, heteromorphy of sex chromosomes not checked)


 * Hydrophis spiralis (2n=32, ZZ, ZW)

Viperidae
 * Microcephalophis gracilis (2n=35 in females, ZZ, ZW1W2)
 * Echis carinatus (2n=36, ZZ, ZW)