SY 
PAPERS? PRESENTED DURING 1921. 
A Study of the Lucanid Coleoptera of the Hawaiian Islands. 
BY EDWIN C. VAN DYKE, 
University of California, Berkeley, Cal. 
(Presented by title by W. M. Giffard at the meeting of 
December 1, 1921.) 
In the year 1871, the first specimens of Hawaiian Lucanidae 
were secured by Mr. Harper Pease, from the “Mountains of 
Kanoi,’ and sent to the British Museum, where they were 
studied by Charles O. Waterhouse’ and a new genus, 4 ptero- 
cyclus, with one species, Honoluluensis, established for their 
reception. By the time the “Fauna Hawaiiensis” was pub- 
lished, a few more specimens had been secured, chiefly by 
Mr. Perkins. These were studied by Dr. David Sharp? and, 
as several were found to differ considerably in structure from 
the species described and figured by Waterhouse, were de- 
scribed as new. ‘This brought the number of known forms 
from the islands up to seven, where it has remained ever since. 
Within the last few years, however, a fairly large number of 
specimens has been collected, especially through the field work 
of Mr. J. August Kusche, who captured, in 1919, considerably 
over a hundred specimens in the uplands of the island of Kauai 
and of Mr. H. T. Osborn, who: found about a dozen, at Puu 
Ka Pele, Kauai, the same year. A portion of the specimens 
collected by Mr. Kusche came to me through the courtesy of 
Mr. Preston Clark, of Boston. The remainder were secured 
by Mr. W. M. Giffard and the Bishop Museum, both of Hono- 
lulu. Mr. Osborn’s specimens went to the collection of the 
Hawaiian Sugar Planters’ Association. 
As a result of an examination of my specimens, I soon found 
that our ideas with regard to the group needed revision. Mr. 
Giffard, who had been studying the specimens in the islands, 
came to the same conclusion and later on, finding that I had 
been devoting some time to their study, wrote to me and 
Proc. Haw. Ent. Soe., V, No. 1, October, 1922. 
1 Trans. Entom. Soe. London, 1871, p. 315. 
2 Fauna Hawaiiensis, Vol. III, Pt. V, Coleoptera, pp. 403-405. 
