. . "Leptognathus gracilis (Boulenger, 1902)" . . . . . "Sibynomorphus macrostomus (Amaral, 1925)" . . "The graceful snail-eater (Dipsas gracilis), is a non-venomous snake found in the northern part of South America (NW Ecuador, Peru, and Colombia).No subspecies are currently recognized."@en . . . "Leptognathus hammondii (Boulenger, 1920)" . .