_Hyla baudini dolomedes_ Barbour (1923:11), as shown by Dunn (1931a:413), was based on a specimen of _Smilisca phaeota_ from Rio Esnape, Darien, Panama. [Illustration: FIG. 1. Map showing locality records for _Smilisca baudini_.] _Distribution_.--_Smilisca baudini_ inhabits lowlands and foothills usually covered by xerophytic vegetation or savannas, but in the southern part of its range _baudini_ inhabits tropical evergreen forest. The species ranges throughout the Pacific and Atlantic lowlands of Mexico from southern Sonora and the Rio Grande embayment of Texas southward to Costa Rica, where on the Pacific lowlands the range terminates at the southern limits of the arid tropical forest in the vicinity of Esparta; on the Caribbean lowlands the distribution seems to be discontinuous southward to Suretka (Fig. 1). Most localities where the species has been collected are at elevations of less than 1000 meters. Three localities are notably higher; calling males were found at small temporary ponds in pine-oak forest at Linda Vista, 2 kilometers northwest of Pueblo Nuevo Solistahuacan, Chiapas, elevation 1675 meters, and 10 kilometers northwest of Comitan, Chiapas, at an elevation of 1925 meters. Tadpoles and metamorphosing young were obtained from a pond in arid scrub forest, 17 kilometers northeast of Juchatengo, Oaxaca, elevation 1600 meters. Stuart (1954:46) recorded the species at elevations up to 1400 meters in the south-eastern highlands of Guatemala. _Specimens examined._--3006, as follows: UNITED STATES: TEXAS: Cameron County, Brownsville, CNHM 5412-3, 6869, UMMZ 54036, USNM 3256. MEXICO: =Campeche=: Balchacaj, CNHM 102285, 102288, 102291, 102311, UIMNH 30709-22, 30726; Champoton, UMMZ 73172 (2), 73176, 73180; 16 km. E Champoton, UMMZ 73181; 5 km. S Champoton, KU 71369-75; 9 km. S Champoton, KU 71367-8; 10.5 km. S Champoton, KU 71365-6, 71722 (tadpoles), 71723 (yg.); 24 km. S Champoton, UMMZ 73177 (2); Chuina, KU 75101-3; Ciudad del Carmen, UIMNH 30703-8; Dzibalchen, KU 75413-31; Encarnacion, CNHM 102282, 102289, 102294-5, 102300, 102306-8, 102312, 102314, 102316-7, 102319, 102322, UIMNH 30727-40, 30836-7; 1 km. W Escarcega, KU 71391-6; 6 km. W Escarcega, KU 71397-403; 7.5 km. W Escarcega, KU 71376-89; 14 km. W Escarcega, KU 71390; 13 km. W, 1 km. N Escarcega, KU 71404; 3 km. N Hopelchen, KU 75410-11; 2 km. NE Hopelchen, KU 75412; Matamoras, CNHM 36573; Pital, UIMNH 30741; 1 km. SW Puerto Real, Isla del Carmen, KU 71345-64; San Jose Carpizo, UMMZ 99879; Tres Brazos, CNHM 102284, UIMNH 30723-5; Tuxpena Camp, UMMZ 73239.