22 PEEFACE. 



In the East Mr. Roland Thaxter, Mr. L. W. Goodell, 

 Mr. G. E. Pilate, Prof. 0. H. Pernald, Mrs. Peruald, 

 Mr. Pish, and Mr. Allen have been very kind to 

 me in communicating material. Mr. Coquillet has 

 sent me notes on many larvte. Prof. J. A. Lintner, 

 Dr. James S. Bailey, Mr. Hill, Mr. Gray, and Mr. 

 von Meske have sent me many species from the 

 central portion of New York State, as well as from 

 the North Woods. Prom Phode Island the col- 

 lections of my kind friend of long standing, Mrs. 

 S. W. Bridgham, have allowed me to examine most 

 of the species occurring near the seaboard of the 

 Eastern States. No collection that I have seen has 

 been brought together with more care ; and by the 

 gathering of many specimens of a species, Mrs. 

 Bridgham has given me important data for study- 

 ing variation in this group. Prom the South I 

 have seen most of Belfrage's collections in Texas, 

 and those of Mr. Schwarz and Mr. Koebele in 

 Plorida. I have collected myself in Alabama, and 

 Mr. Morrison has sent me a quantity of Deltoids 

 from North Carolina. I have acquired some of 

 Mr. Morrison's collections in Southern California 

 and Washington Territory ; and Mr. Pred. Tepper 

 and Mr. E. L. Graef have kindly allowed me to ex- 

 amine the species they have received from the same 

 collector. 



It was a labour of love to Mr. Henry S. Sprague, 

 the Entomologist, when he drew the excellent Plates 

 of Noctuidge, on stone, wliich illustrate my articles 

 published by the Buffalo Society of Natural Sciences. 



Mr. Julius Pohlman, my assistant during the 



