20 
Psyche 
[March-June 
References 
Comstock, J. A. 1927. Butterflies of California. 
Davenport, D. and Dethier, V. G. 1938. Bibliography of the described life-his- 
tories of the Rhopalocera of America north of Mexico 1889-1937. Ent. Amer. 
17(4): 155-194. 
Edwards, H. 1889. Bibliographical catalogue of the described transformations 
of North American Lepidoptera. Bui. U. S. Nat. Mus. No. 35: 1-37. 
Field, W. D. 1938. A manual of the butterflies and skippers of Kansas. Bull. 
Univ. Kansas 39(10) : 1-328. 
Hayward, K. J. 1941. Plantas alimenticias de Hesperidos Argentinos. Rev. Soc. 
Ent. Argentina 11(1): 31-36. 
McDunnough, J. 1938. Check list of the Lepidoptera of Canada and the United 
States of America. Part I Macrolepidoptera. Mem. S. Calif. Acad. Sci. 
1: 1-36. 
Wolcott, G. N. 1936. '“Insectae Borinquenses.” Jour. Agri. Univ. Puerto Rico 
20(1) : 396-412, 602-627. 
DICHELONYX CANADENSIS HORN 
By C. A. Frost 
Framingham, Mass. 
In his monograph of this genus in the Trans. Am. Ent. Soc. 
Vol. XXVII, 1901, Mr. H. C. Fall writes, “This species is quite 
unknown to me nor do I know if there are any in collections 
besides the type.” The only locality given in Leng’s list is 
“Can.” which is evidently the locality given by Horn in his 
description in 1876. 
Specimens in my collection taken by me at Paris, Maine are 
dated: — June 17, 1912, July 15, 1913, June 10, 1925, June 30, 
1932, July 6, 1933. and July 7, 1937. Some of them are labelled 
as swept from Corylus rostrata , or taken on the leaves of this 
plant where they were observed feeding. On June 22, 1945, 
while eating lunch in the shade of a large white pine on the edge 
of an open pasture, I noticed a couple of specimens on the grass 
stems in front of me. Later some unexplained desire to enter 
the dense shadows of the pines and hemlocks behind me was 
acted on. There I found this beetle flying over the forest floor 
in great numbers; they flew from one to three feet high fre- 
quently coming to rest on the ground or on fallen twigs and 
branches, for a few moments only in many cases; no copulation 
was observed. 106 specimens were taken and their numbers 
seemed to be but little diminished at the end of an hour, which 
