Synopsis of the Snakes of the Philippines A Synthesis of Data from Biodiversity Repositories, Field Studies, and the Literature Author Leviton, Alan E. Herpetology Division, Institute of Biodiversity Science & Sustainibility, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, California 94118 & Research Associate, Division of Amphibians & Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA. aleviton@calacademy.org Author Siler, Cameron D. Department of Biology and Sam Noble Museum, University of Oklahoma, 2401 Chautauqua Ave., Norman, OK 73072 - 7029, USA & Zoology Division, National Museum of the Philippines, Rizal Park, Burgos Ave., Ermita 1000, Manila, Philippines. camsiler@ou.edu Author Weinell, Jeffrey L. Department of Ecology and Evolutionary Biology and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045 jweine2@gmail.com Author Brown, Rafe M. Department of Ecology and Evolutionary Biology and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045 & Zoology Division, National Museum of the Philippines, Rizal Park, Burgos Ave., Ermita 1000, Manila, Philippines. rafe@ku.edu text Proceedings of the California Academy of Sciences 2018 Oxford, England 2018-03-29 64 14 399 568 http://dx.doi.org/10.5281/zenodo.11512589 journal article 299690 10.5281/zenodo.11512589 d7a23684-9222-422b-868a-6c8712a4fd05 0068-547X 11512589 Coelognathus philippinus ( Griffin, 1909a ) Palawan Rat Snake Coluber erythrurus , Boettger, 1895:3 , 5 (Calamian Ids.); 1898:54 (part: Culion). Elaphe erythrura , Griffin, 1909:597 ( Palawan ). Elaphe philippina Griffin, 1909:597 ; 1911:260 ( Palawan ).— Taylor, 1922a:159 (part: Balabac, Busuanga, Palawan [Iwahig, Taytay]). Elaphe erythrura philippina , Leviton, 1963c:382 , 385 (Busuanga, Culion, Palawan ); 1979:113.— Gaulke, 1994b:140 ; 1996:50 , fig. 3 ; 1999:278. Coelognathus philippinus , Helfenberger 2001:52 .— Wallach, Williams, and Boundy, 2014:170. TYPE LOCALITY AND TYPE SPECIMEN ( S ) .— Iwahig , Palawan Id. , Philippines . Lectotype : CAS 62143 , designated by Leviton (1979:114) . PHILIPPINE DISTRIBUTION ( ENDEMIC ) ( Map 10D [p. 121]).— Palawan Archipelago (Balabac, Busuanga, Calamian Ids. [Calauit], Culion, Palawan ), Sulu Archipelago (Bongao, Sanga-Sanga, Sibutu, Tawi-Tawi ). REMARKS .— For a long time, this species was considered a subspecies of Coelognathus (formerly Elaphe ) erythrurus but more recently Helfenberger (2001) demonstrated its distinctness from C. erythrurus that justifies its recognition as a separate and only distantly related species. CONSERVATION STATUS [IUCN] .— The conservation status of Coelognathus philippinus has not been assessed for the IUCN Red List [2016] ver. 3.1, but IUCN notes that it is listed in the Catalogue of Life .