%\t dfewfoian Entomologist. 



VOL. X. LONDON, ONT, JULY, 1878. No. 7 



THE GENERA OF THE HESPERID/E OF THE EUROPEAN 



FAUNAL-REGION. 



BY DR. A. SPEYER. 

 (Translated from the Stettiner Entomologische Zeitung for 1878, pp. 167-193.) 



[Of marked value, as is everything upon the Lepidoptera proceeding 

 from the pen of Dr. Speyer, the present paper — an arrangement of the 

 Hesperidre which will generally be conceded to be quite in advance of any 

 heretofore presented — will prove of special interest to the American 

 student, in connection with the arrangements short time ago presented by 

 the same author, of some of our American species (Edwards' Catalogue 

 of the Lepidoptera of North America), associated with the European species 

 (my Entomological Contributions, No. iv., p. 71). The admirable dis- 

 cussion in this paper of the value and relative importance of the several 

 structural features of the Hesperians, cannot fail of being of eminent 

 service in the systematic arrangement of our numerous species. Great 

 care has been taken with the translation to render it a faithful one. The 

 thanks of the appreciative reader are due to Mr. W. H. Edwards and 

 Mr. O. von Meske for providing for the translation, and to Prof. Uhler 

 for its supervision. The remaining two-thirds of the paper will be given 

 in the two following numbers of this journal. — J. A. Lintner.] 



A task set for me by American friends* induced me to undertake, in 

 connection with the North American Hesperidae in my own collection, 



* I have been able to comply with the wish of my friends, to aid them in the 

 arrangement of the Hesperid.e (for the purpose of publishing a new Catalogue of their 

 Rhopalocera) only within the narrow limits to which I am confined by my very imperfect 

 acquaintance with the American species of the family. In addition to the statement 



