Cope's E. latrans from central Texas. Direct comparison of Mexican 

 specimens with the cotypes of E. latrans does not entirely confirm 

 this assumption. Though there are no constant structural features 

 that will distinguish specimens from these two areas, it was observed 

 that in E. latrans the fourth toe is relatively longer, the color pattern 

 consists of fairly closely aggregated large black blotches, the sides 

 and hinder half of the abdomen are faintly areolate, and the skin on 

 the upper parts of old adults is stiff, coarse, and areolate. These two 

 forms are unquestionably rather closely related. An immature in- 

 dividual from Jalisco and an adult individual (with a body length of 

 75 mm.) collected by Ruthling, which unfortunately is without any 

 definite locality, were used in these direct comparisons. The skin on 

 the upper parts of the immature individual from Jalisco is much more 

 tubercular and warty than that on the Texas specimens. Juvenile 

 characters, such as vestigal postcephalic intratympanic dermal fold 

 and vomerine teeth in minute clusters, are not unusual, but the 

 presence of an abdominal disk seems rather remarkable for so young 

 an individual." (R. Kellogg, 1932, p. 101). 



Notes: "The Hy lodes augusti (Duges MS.), Brocchi Mission 

 Scientifique de Mexique, 1881, from Guanajuato, Mexico, is related 

 to the present arvimal. I do not know what the specific difference is, 

 unless it be in the form of the vomerine patches, which I can not 

 clearly make out from Brocchi's description." (Cope, 1889, p. 317). 



We, in working over our material, concluded from Brocchi's 

 and Mocquard's descriptions and from Mocquard's figure that 

 E. latrans must be reduced to the synonymy of E. augusti. We had no 

 access to the type specimens of the latter species. Independently, Dr. 

 Remington Kellogg came to the same decision, but on a recent trip 

 to Europe, he examined the types of E. augusti and assures us that 

 E. augusti is distinct from E. latrans. Two or three specimens in 

 Baylor University and San Antonio Museum (Marnock specimens) 

 have a light transverse band across the back from forearm to forearm 

 like Brocchi's figure and Kellogg's description. We are fearful that the 

 question of the distinctness of E. augusti is not yet solved. 



"H. augusti is essentially nocturnal which explains its rarity in 

 collections. Cope was made acquainted with these habits from the 

 information furnished him by M. G. W. Marnock who discovered it in 

 Texas. These details confirm for me the following information well 

 given by M. Diguet: 'These batrachians are encountered in the terri- 

 tory of Tepic in the humid ravines, at the beginning of the rainy 

 season at the end of June and July. The voice is resounding and is 

 heard at a great distance after the setting of the sun. At the time 

 mentioned above, one finds them fastened on the trunks of certain 

 trees with smooth bark such as the Burseras, the color of which is the 

 same as that of the animal.' " (Mocquard, 1898-1899, pp. 160-163). 



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