A New Species of Xenodontine Colubrid Snake of the Genus Synophis from Ecuador and the Phylogeny of the Genera Synophis and Emmochliophis

出版	Museum of Natural History, the University of Kansas, 1971
URL	http://books.google.com.hk/books?id=PupJAQAAMAAJ&hl=&source=gbs_api