Hoser 2013. In praise of subgenera, with ethics and within the rules of zoology: taxonomic status of the snake genera Calliophis Gray, 1835, Liophidium Boulenger, 1896 and Liopholidophis Mocquard, 1904 (Serpentes). Australasian Journal of Herpetology, 17, 29 April 2013: 35-50