Cjje Camibian Entomologist, 



VOL. X. LONDON, ONT., MAY, 1878. No. 5 



TORTRICID/E. 



BY PROF. C. H. FERNALD, STATE COLLEGE, ORONO, ME. 



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The present is the first of a series of pipers on the Tortricidce of North 

 America which the writer hopes to be able to prepare from the material 

 now in hand, and collections that may be made hereafter by Entomolo- 

 gists in various parts of the country. 



I was first led to the study of the Tortricidce by the advice of Mr. A. 

 R. Grote, who, with a generosity rarely met, placed his entire collection 

 of Tortricids in my hands to work up, and further gave me his collection 

 of European Tortricidce. for comparison, and loaned me his types for 

 study. I fear I may never be able to make anything like an adequate 

 return to this gentleman who has placed me under so great obligations. 



I am very deeply indebted to Mr. E. T. Cresson, of Philadelphia, who 

 gave me every facility for a careful and critical study of the types of 

 Clemens, and also those of Robinson. I think it would have been 

 impossible to have recognized some of Clemens' species without having 

 seen his types. Some of his descriptions were made from very much 

 damaged and mutilated specimens, others from single specimens which 

 prove to belong to very variable species, and his descriptions in some 

 instances are insufficient. Dr. Clemens' great mistake was in attempting 

 to make descriptions from imperfect and insufficient material. His genera 

 have also proved a stumbling block to those who have attempted to make 

 out his species. Notwithstanding, this pioneer student of the North 

 American Tortricidce did an admirable work, and his papers will remain a 

 monument to his zeal in the study of Entomology. 



It is useless to deplore that he did not have access to the works of the 

 continental authors ; had he lived to revise his work, no doubt it would 



