SKINNER AND WILLIAMS 



123 



Methodique.^ Godart says bathyllus approaches daunus in ap- 

 pearance. From the Cramer figure of daunus it is doubtfully 

 possible to identify the species, which may be an unidentified 

 Surinam insect. Bathyllus appears to be confined to America 

 north of Mexico, as it has not been recorded in the Biologia. 

 The figure of bathyllus in Abbott and Smith's Insects of 

 Georgia is excellent, and it seems unwise to place it as a synonym 

 of daunus without additional evidence. 



Fig. 27. Fig. 28. 



Fig. 27. Cogia (Thorybes) mexicana. Uruapan, Michoacan, Mexico. 

 Cogia (Thorybes) nevada. Mono Lake, California. 



Fig. 2S. 



30. Cogia (Thorybes) mexicana Herrich-Schaeffer (Fig. 27.) 



Biologia, plate SO, fig. 17. 



We have this species from Uruapan, Mexico, April 15, 1919; 

 Popocatepetl Park, Mexico, September 17, 1906 (Calvert), and 

 Real del Monte, Hidalgo, Mexico, August 40, 1908 (Van Nos- 

 trand). We beheve that the male genitalia, however, warrant 

 its separation from nevada Scudder (aemelia Skinner). The 

 tegumen and aedoeagus are alike, but the extremity of the 

 valve in mexicana is somewhat convex and slightly serrate, 

 while that of nevada is concave or well cut into with a rounded 

 excavation, and the serrations or teeth are much stronger. 

 Mexicana probably does not enter our territory. 



^ X, p. 764, 1823. 



TR.\NS. .\.M. ENT. SOC, XLVIII. 



