188 



BULLETIN 160, UNITED STATES NATIONAL MUSEUM 



Range. — From southern Sinaloa southward through San Luis 

 Potosi and Jahsco to Tehuantepec in Oaxaca and southern Vera 

 Cruz (Minatitlan). 



Remarks. — The type of Cope's Engystoma ustum (U.S.N.M. No. 

 24965) is partially macerated, the fleshy portions are largely dis- 

 integrated, and the skeleton is more or less disarticulated. J. J. 

 Major, the collector of the type, in 1861 sent a collection of reptiles 

 to the Museum, and this type was presimiably included in the ship- 

 ment, since no other accessions are credited to him. 



The three cotypes of Eupemphix gadorii (B. M. Nos. 1903. 9. 30. 

 259-261) were obtained by Dr. and Mrs. Hans Gadow at San IMateo 

 del Mar in Oaxaca. H. W. Parker, of the British Museum of Natural 

 History, has recently examined the cotypes and reports that they are 

 narrow-mouthed toads belonging to the genus Gastrophryne and that 

 although very young they seem to be referable to the species usta. 

 According to my own observations, all these cotypes are very young 

 individuals, the head-and-body length of the largest being 12.4 mm.; 

 one has a Ught vertebral stripe; an inner metatarsal tubercle present; 

 a light silvery streak extends along canthus rostrahs from nostril to 

 eye and is continued backward from eye along side to near level of 

 anterior end of sacrum as a very irregular wavy band. 



In the introduction to the report on the herpetological specimens 

 collected by Berkenbusch in Puebla, Peters states that they were 

 taken in the vicinity of Matamoros and at other localities. No 

 specific type locaUty is given, except that of Puebla in the title of the 

 paper, for his supposedly new species, Engystoma mexicanum. Cope ^^ 

 seems to have been the first to recognize that Peters's species was 

 identical with usta, but nevertheless the last-mentioned species was 

 mistakenly allocated to the genus Systoma. 



Specimens examined. — Twenty, as follows: 



Gastrophryne usta 



1 Type of Engystoma ustum. 2 Cotypes of Evpemphix gadorii. 



'» Cope, E. D., Proc. -\cad. Nat. Sci. Philadelphia, vol. 23, p. 216, Oct. 24, 1871. 



