578 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
The vomerine tooth series of the adults are heavier and bear more 
teeth than the average typical specimen. The tympanum is (in fe- 
males) somewhat more circular than in the typical form where it is 
usually a little higher than wide, and the inner metatarsal tubercle 
is larger. 
The following have been cataloged from a series of 219 collected: 
Cuiapas: U.S.N.M. Nos. 116908-116913, Colonia Soconusco, May 10, 
1940; U.S.N.M. Nos. 116914-116920, Tonaldé, January 26-30, 1940; 
U.S.N.M. No. 116921, Las Nubes, April 15, 1940; U.S.N.M. Nos. 
116922-116927, Finca Judrez, May 8-10, 1940; U.S.N.M. Nos. 116928- 
116937, Cruz de Piedra, April 25, 1940; U.S.N.M. Nos. 116938-— 
116944, Las Gradas, May 20, 1940; U.S.N.M. Nos. 116945-116953, 
Salto de Agua, April 18 to May 19, 1940; U.S.N.M. Nos. 116954— 
116959, La Esperanza, April 4-5 and June 4, 1940. 
Cope has described three related eleutherodactylid forms from 
Central America as distinct species: Lithodytes podiciferus, muricinus, 
and habenatus (1876, pp. 107-108). He later (1879, p. 268) identified 
certain Oaxaca specimens as belonging to podiciferus; and in a still 
later paper (18938, p. 338) these three presumed species were thrown 
back into the synonymy of rhodopis. It seems probable that some of 
these names may be referable to the variants here recorded. 
ELEUTHERODACTYLUS NATATOR Taylor 
Eleutherodactylus natator Tayuor, Univ. Kansas Sci. Bull., vol. 25, No. 17, 1938 
(July 10, 1989b, first mailing), pp. 394-397, pl. 39, fig. 2, pl. 40 (Tlilapan 
[=Cuautlapan], Veracruz). 
The collection contains six specimens including five topotypes 
(U.S.N.M. Nos. 116034-116038) from Cuautlapan, January 4-16, 
1939, and January to February, 1940, and No. 116039 from Metlac, 
Veracruz, January 5, 1939. 
This form, apparently a derivative of Hleutherodactylus rugulosus, 
differs in reaching a considerably larger size, having longer limbs, 
slightly larger disks on the toes, and the heels overlapping several 
millimeters when the limbs are placed at right angles to the body. 
There is an extraordinary sex difference in size. The largest known 
male measures only 43 mm., while the type, a female, measures 93 
mm. The largest female E. rugulosus examined (in 735 specimens) 
measures only 72 mm. and is about one-half the bulk of the female 
type of £. natator. 
ELEUTHERODACTYLUS RUGULOSUS (Cope) 
PLATE 23, Fiaurss 3, 4 
Liyla rugulosa Corn, Proc. Amer. Philos. Soc., vol. 11, No. 82, July 16, 1869b, 
p. 160-161 (Pacific region of the Isthmus of Tehuantepec, México). 
Hleutherodactylus rugulosus Ketutoaa, U. S. Nat. Mus. Bull. 160, 1932, pp. 116- 
117 (possibly only part). 
