Gerarda prevostiana
Gerarda prevostiana adalah spesies ular air yang terdapat di India hingga Asia Tenggara.

Pengenalan 
Panjang tubuhnya mencapai 41 cm. Tubuh bagian atas berwarna zaitun dengan sisi badan dan bagian bawah tubuh berwarna keputihan.

Penyebaran 
India, Bangladesh, Sri Lanka, Thailand, Filipina, Kamboja, Malaysia, dan Indonesia (Kalimantan).

Referensi 

 Das I. 2002. A Photographic Guide to the Snakes and Other Reptiles of India. Sanibel Island, Florida: Ralph Curtis Books. 144 pp. ISBN 0-88359-056-5. (Gerardia [sic] prevostiana, p. 35).
 Gray JE. 1849. Catalogue of the Specimens of Snakes in the British Museum. London: Trustees of the British Museum. (Edward Newman, printer). xv + 125 pp. (Gerarda, new genus, p.77).
 Smith MA. 1943. The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-region. Reptilia and Amphibia, Vol. III.—Serpentes. London: Secretary of State for India. (Taylor and Francis, printers). xii + 583 pp. (Gerardia [sic] prevostiana, pp. 394-396 + Figures 125-126).
 Wall F. 1921. Ophidia Taprobanica or the Snakes of Ceylon. Colombo, Ceylon [=Sri Lanka]]: Colombo Museum. (H.R. Cottle, Government Printer). xxii + 581 pp. (Gerardia [sic] prevostiana, pp. 262-265, Figure 53).

 Gerarda prevostiana @ The Reptile Database 

Homalopsidae
Ular Indonesia
Reptil India
Reptil Asia