Amphibia of El Salvador The Genus Oedipus 7) longer than head and body, eastern Mexico---- ----------------------------------------------chiropterus Vomerine series more transverse, beginning outside inner edge of nares, inner toe not rudimentary--------------------------------------8 8) Tail shorter than head and body, western Mexi- co---------------------------------------------sulcatus Tail longer than head and body, Guatemala---- -------------------------------------------------rex 9) Toes nearly free, a groove from eye to gular fold, Mexico-----------------------------------cephalicus Toes half or more webbed, no groove from eye to gular fold----------------------------------10 10) Two phalanges of third toe free, Guatemala---- -------------------------------------------------rostratum Less than two phalanges of third toe free--11 11) One phalanx of third toe free---------------12 Less than a whole phalanx of third toe free, Colombia and Venezuela-------------------------adspersus 12) Two very different color phases, one with light belly, Guatemala and Honduras----morio No light color phase, Costa Rica and Panama-- ------------------------------------------------subpalmatus 13) Belly unpigmented---------------------------------14 Belly pigmented-------------------------------------15 14) A dorsal light area with large dark spots outlined with light, Pacific Coast, Mexico to Costa Rica--------------------------------------salvinii Dark with two dorsolateral light lines, Guate- mala and Chiapas-------------------------------attitlanensis 15) Belly striped, yellow and blackish brown, Nica- ragua and Costa Rica---------------------------striatulus Belly not striped----------------------------------16 16) Dorsal area of clear yellow, with or without black spotting or streaking, Mexico to Hondu-