( these 3) 
posal were absolutely insufficient for the work he undertook. 
Watson’s arrangement, though not by any means final, is based 
on amuch wider study, and the revision which I am now 
engaged on, with the assistance of Mr. J. Edwards, of his 
genera, so far as they are found in the North Temperate and 
Indian regions, leads me to prefer it to Speyer’s. 
Carcharodus, Hubn. (Spilothyrus apud Staudinger, Pyrgus 
in part apud Speyer) has three or four species occurring in 
Europe and West Asia, but all characteristic of the Mediter- 
raneo-Persic sub-region, and absent from N. America. 
Hesperia, Fabr. (Syricthus apud Staudinger, Scelothrix 
apud Speyer) is the most numerous of all the genera in this 
region, but is cosmopolitan in distribution, though poorly repre- 
sented in N. America. Over twenty species may be distin- 
guished, and probably more exist, as Mr. J. Edwards, in study- 
ing the genital organs of the species in my collection, has 
found constant and striking differences, which he considers of 
specific value, between H, malva and what is here shown as 
H. distincta 
Thanaos (Nisoniades apud Staudinger) is widely spread 
throughout the region and in N. America, where it seems 
most abundant. 
Adopea (Hesperia in part apud Staudinger, Thymelicus pt. 
apud Speyer), of which A. thawmas is typical, according to 
Speyer, occurs sparingly throughout the region, and also in 
N. America, if 7’. garita is congeneric, as Speyer asserts. 
Erynnis, Schranck (Hesperia in part apud Staudinger, 
Pamphila part apud Speyer), is also very widely spread, and 
perhaps most of the supposed species composing it may be 
regarded as forms of H. comma. 
Pamphila, Fabr. (Carterocephalus apud Staudinger and 
Speyer), is a small genus represented in Northern Europe, 
Asia, America, and E. Tibet. 
Heteropterus (Cyclopides apud Staudinger and Speyer), a 
small genus peculiar to N. Europe and Asia. Butleria aurei- 
pennis, from Chili, seems to be a representative form. 
Gegenes, Hubn. (Hesperia in part apud Staudinger, Goniloba 
apud Speyer), is a genus of African affinity, only occurring in 
the Mediterraneo-Persic sub-region. 
