334 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



winged flies, are in process of determination, most of the important families 

 now being in the hands of 'specialists for study. The curator has recently 

 begun the determination and arrangement of the Hemiptera, or true bugs, 

 and thus far has completed 15 families numbering 4,064 specimens repre- 

 senting 400 species. In the Lepidoptera, embracing the butterflies and 

 moths, the work of arranging is progressing as rapidly as the material can 

 be sorted over and determined. These insects, as well as the Neuroptera. 

 represented by the dragon-flies, and the Orthoptera, or grasshoppers and 

 their relatives, are larger and their arrangement must await the purchase 

 of sufficient boxes for their display. 



So much time was required in mounting and labeling the material added 

 and in assorting and arranging it and the accumulated material, that little 

 was available for systematic study by the curator. One paper on the new 

 forms of Hemiptera brought to light by the work of the previous year was, 

 however, published by the Academy, in which appeared descriptions of 39 

 new species or races, mostly from California ; and a shorter paper on the 

 Hemiptera taken by the Canadian Arctic Exploring Expedition of 1913- 

 1916 was prepared and sent to the Canadian Government at Ottawa for 

 publication in the scientific results of that Expedition. 



During the year the exhibition of exotic butterflies in the mammal hall 

 of the Academy was replaced by a much larger collection of exotic forms 

 numbering 248 specimens displayed in riker mounts, and a start was made 

 on three smaller exhibits ; one of California butterflies, another of miscel- 

 laneous insects showing mimicry and other interesting features, and one of 

 life history and similar groups, and species of economic importance. 



In a science dealing with such vast numbers of forms as does entomology 

 the determination of material must be entrusted to specialists. The cura- 

 tor is qualified to do this work in the order Hemiptera, not only in the 

 Academy collection but for other institutions as w^ell, in return for similar 

 help on other orders of insects. In this way the Afuseum, through the 

 curator, has furnished information or determination of material for the 

 following 23 students : 



Dr. W. H. Brittain, Government Entomologist, Truro, N. S.; Mr. H. G. 

 Barber, Roselle Park, N. J. ; Dr. William Barnes, Decatur, 111. ; Prof. Geo. 

 A. Coleman, University of California, Berkeley, Calif. ; Dr. J. H. Comstock, 

 Los Angeles, Calif.; Mr. E. L. Dickerson, Nutley, N. J.; Mr. Wm. T. 

 Davis, New Brighton, N. Y. ; Mr. R. K. Fletcher, Ohio State University. 

 Columbus, Ohio ; Mr. W. M. Giffard, Honolulu, T. H. ; Dr. Wm. A. Hilton, 

 Pomona College, Claremont, Calif. ; Dr. C. Gordon Hewitt, Dominion 

 Entomologist, Ottawa, Ont. ; Prof. O. A. Johannsen, Cornell University, 

 Ithaca, N. Y. ; Mr. H. H. Knight, Cornell, University, Ithaca, N. Y. ; Mr. 

 Philip Lugenbill, Columbia, S. C. ; Mr. J. McDonough, Decatur, 111.; Prof. 

 Z. P. Metcalfe, N. C. Experiment Station, West Raleigh, N. C. ; Mr. W. L. 

 McAtee, U. S. Biological Survey, Washington, D. C. ; Mr. W. F. Hamilton, 

 Pomona College, Claremont, Calif. ; Dr. H. M. Parshley, Smith College, 

 Northampton, Mass. ; Mrs. Annie Trumbull Slosson, New York City ; Dr. 

 Carl J. Drake, N. Y. State College of Forestry, Syracuse, N. Y. ; Dr. F. H. 



