Cochran (1961:58), in her catalogue of type specimens in the United States National Museum, listed _Hyla puma_ Cope, 1885, as a synonym of _Hyla molitor_ Schmidt, 1857. She made no qualifying statements. Schmidt (1858:246), in his descriptions of the species in the year following his publication of the names and Latin diagnoses, stated: "Dorsum uniformly gray, more intensive on back, fading away laterally and on extremities; in every-day-life this blue would be called _Mueller's Blau_. A delicately dotted black line runs on the canthus rostralis from the opening of the nose to the corner of the eye. In the armpits, on the flanks and the thighs two of our three specimens have black marblings." [Free translation] Certainly on the basis of coloration _Hyla puma_ is distinctly different from _Hyla molitor_. _Distribution._--This species lives in the wet, forested regions of the Caribbean lowlands of Costa Rica and presumably southern Nicaragua (Fig. 3). All specimens are from low elevations; the highest known elevation for the occurrence of this frog is 285 meters at Laguna Bonilla. [Illustration: FIG. 3. Map showing locality records for _Smilisca puma_ (triangles) and _Smilisca sila_ (circles).] _Specimens examined._--62, as follows: NICARAGUA: No specific locality, USNM 13735. COSTA RICA: =Alajuela=: Jabillos, 5 km. N Santa Clara, USC 8058 (6); 5 km. W La Fortuna, USC 8078 (2); Rio La Fortuna at La Fortuna, USC 7151 (3). =Cartago=: Laguna Bonilla, tunnel camp near Peralta, KU 32171. =Heredia=: Puerto Viejo, KU 86521; 5.9 km. W Puerto Viejo, KU 64307; 7.5 km. W Puerto Viejo, KU 64308-10, 64311 (skeleton), 64312-15, 68635-6 (skeletons), 85001-2 (skeletons), 86520, 87770-1 (skeletons), 91709-16, 91791-2, 91807 (tadpoles), 91808 (young). =Limon=: Batan, KU 30300-2; La Lola, KU 32169, USC 141, 201, 8067; Los Diamantes, KU 32170, UMMZ 118470 (6), USC 212; 2.4 km. E Los Diamantes, USC 8049 (5). =Smilisca sila= new species _Hyla gabbi_, Noble, Proc. Biol. Soc. Washington, 37:66, Feb. 21, 1924. Dunn, Occas. Papers Boston Soc. Nat. Hist., 5:413, Oct. 10, 1931. Schmidt, Smithsonian Misc. Coll., 89(1):6, March 16, 1933. _Hyla sordida_, Dunn, Copeia, 3:166, Nov. 19, 1937. Cooper, Copeia, 2:121, June 30, 1944. Breder, Bull. Amer. Mus. Nat. Hist., 86(8):417, Aug. 26, 1946. _Hyla phaeota_, Breder, Bull. Amer. Mus. Nat. Hist., 86(8): pl. 55, Aug. 26, 1946. _Holotype._--Adult male, KU 91852 from a small stream at the north edge of the village of El Volcan, Chiriqui Province, Panama, elevation 1280 meters; obtained on Feb. 5, 1965, by William E. Duellman. _Paratypes._--KU 91853-74, collected with the holotype.