CHECKLIST OF THE AMPHIBIA OF MEXICO 57 



LEPTODACTYLUS MELANONOTUS (Hallowell) 



Cystignathus melanonotus Hallowell, Proc. Acad. Nat. Sci Philadelphia vol 

 12, 1860, p. 485. ' 



Leptodadylus melanonotus Brocchi, Mission scientifique au Mexique et dans 

 I'Am^rique centrale, pt. 3, sect. 2, livr. 1, 1881, p. 20.— Kellogg, U. S Nat 

 Mus. Bull. 160, 1932, pp. 82-83, 88-89.— Gaige, Carnegie Inst. Washington 

 Publ. No. 457, 1936, p. 291 (tadpole).— Bogert and Oliver, Bull. Amer 

 Mus. Nat. Hist., vol. 83, 1945, pp. 342-343. 



? Cystignathus microtis Cope, Proc. Amer. Philos. Soc, vol. 18, 1879, p. 265 

 (Guanajuato, Mexico; U.S.N. M. No. 9906). 



Cystignathus perlaevis Cope, Proc. Amer. Philos. Soc, vol. 18, 1879, pp. 269-270 

 (Japana [=Tapana=Tapanatepec] Oaxaca; U.S.N. M. No. 10041). 



Leptodadylus caliginosus GtJNTHEB, Biologia Centrali-Americana, Reptilia and 

 Batracliia, 1900, p. 214 {nee L. caliginosus Girard). 



T7/pe.— U.S.N.M. No. 6264. 



Tuj)e locality. — Nicaragua. 



Range. — Southern Sonora and San Luis Potosi southward along 

 both coasts to Costa Rica. Recorded in Mexico from the states of 

 Sonora, Sinaloa, Michoacan, Cohma, Guanajuato (erroneously), Nay- 

 arit, Guerrero, Veracruz, San Luis Potosi, Campeche, Yucatdn, 

 Tabasco, Oaxaca, Chiapas, and Jalisco. 



Genus ELEUTHERODACTYLUS Dumeril and Bibron 



Eleuiherodactylus DuiviiiRiL and Bibron, Erp^tologie g^n^rale, vol. 8, 1841, p. 620. 

 Epirhexis Cope, Journ. Acad. Nat. Sci. Philadelphia, new ser., vol. 6, 1866, p. 

 96 (genotype Batrachyla longipes Baird). 



Genotype. — Eleuiherodactylus martinicensis (=Hylodes martinicen- 

 sis) Tschudi. 



i?an^e.— Southern Texas and Sonora to Brazil and Peru, the Antil- 

 les. 



Species. — About 225, of which 28 occur in Mexico. 



KEY TO MEXICAN SPECIES OF ELEUTHERODACTYLUS 



1. Arboreal forms with tips of digits strongly dilated 2 



Terrestrial forms for the most part, digits not or very moderately dilated; 

 none of digit tips showing an emargination 8 



2. Two or more of the outer digital disks with a median terminal notch 3 



Outer digital disks without trace of a median terminal notch 7 



3. Vocal sac absent in males; tympanum of males about two-thirds diam- 



eter of eye; upper part of tympanum not blackish 4 



Vocal sac present in males; tympanum of males less than lialf length of 

 eye; upper part of tympanum usually blackish 5 



4. Tibiotarsal articulation (heel) to much beyond tip of snout; tympanum 



brownish with a lighter center; a tarsal fold present; vomerine teeth 

 reach forward to a line between middle of choanae; 50 mm., alfredi (p. 60) 

 Tibiotarsal articulation to nostril; no tarsal fold present; vomerine teeth 

 completelv behind level of choanae; 42.5 mm conspicuus (p. 60) 



