1). Amphibia of El Salvador The Genus Oedipus Diagnosis:-Tongue free all around.Eyes func- tional.Males usually(except in worm-like forms) with swollen snout and enlarged premaxillary (and occasionally maxillary)teeth.Tail with basal constriction(except in worm-like forms). Toes 4-5,webbed partly or fully,or more or less united and rudimentary.Terminal phalanges T- shaped.No palmar tubercles. Key to Oedipus:- 1) Oedipus of normal salamander form,not worm- like,never more than 14 costal grooves,feet and limbs never much reduced,nostrils never large in adult--------------------2 Oedipus of which the above is not true----21 2) Toes not fully webbed-----------------------3 Toes fully webbed-----------------------------13 3) Large species reaching 195 mm.,markings not a light dorsal band,vomerine teeth 13-20 in series--------------------------------------4 Medium and small species,never over 150 mm., markings usually a light dorsal band,vomerine teeth at most 15 in series---------------------6 4) Toes nearly free,a double row of yellow spots, Mexico-------------------------------bellii Toes about half webbed,no dorsal markings--5 5) Toes more webbed,no light ring at base of tail, Honduras------------------------------------schmidtii Toes less webbed,a light ring at base of tail, Costa Rica---------------------------------robustus 6) Small species not over 90 mm.,toes nearly free, 9 or fewer teeth in vomerine series---------7 Medium species,toes usually half webbed,9 or more teeth in vomerine series------------------9 7) Vomerine series very oblique,beginning at in- er edge of nares,inner toe rudimentary,tail