Vol. XI] GRUNSKY— PRESIDENT'S REPORT FOR 1921 5Q5 



Vol. XI, No. 10, pp. 111-134 — Characters of Some New Species of 

 North American Hemipterous Insects, with One New Genus, by 

 Edward P. Van Duzee. 



Vol. XI, No. 11, pp. 135-136 — Our North American Species of Strongy- 

 locoris (Hemiptera), by Edward P. Van Duzee. 



Vol. XI, No. 12, pp. 137-144 — Characters of Eight New Species of 

 North American Anthocorid^; or Flower Bugs, by Edward P. Van 

 Duzee. 



Vol. XI, No. 13, pp. 145-152 — A Study of North American Grass Bugs 

 of the Genus Irbisia, by Edward P. Van Duzee. 



Vol. XI, No. 14, pp. 153-195 — Insects of the Pribilof Islands, Alaska : 

 Introduction, by G. Dallas Hanna; Coleoptera, by Edwin C. Van 

 Dyke ; Hydrophorus fumipennis, by M. C. Van Duzee ; Diptera 

 (General Report), by F. R. Cole; Anthomyiid^:, by J. R. Malloch; 

 TipuliDjE, by C. P. Alexander; Hymenoptera (Bremid^:), by Theo- 

 dore H. Frison; Hymenoptera (Saw-flies), by Alexander D. Mac- 

 Gillivray ; and Orthoptera, Neuroptera, Hemiptera and Lepidoptera, 

 by E. P. Van Duzee. 



Vol. XI, No. 15, pp. 197-344 — An Annotated List of the Diptera 

 (Flies) of Oregon, by F. R. Cole and A. L. Lovett. 



Vol. XI, No. 16, pp. 345-393 — Revision of the Pipiza Group of the 

 Family Syrphid^e (Flower-flies) from North of Mexico, by C. 

 Howard Curran. 



Vol. XI, No. 17, pp. 395-398 — Preliminary Diagnoses of more New 

 Species of Reptiles from Islands in the Gulf of California, 

 Mexico, by John Van Denburgh and Joseph R. Slevin. 



During the year 1921 eleven free lectures were delivered 

 at the stated meetings of the Academy, as follows : 



January 5. Vanishing Wild Life in California — Cause and Remedy, 

 by Mr. E. R. Zion, Efficiency Expert, Civil Service 

 Commission, San Francisco, Calif. 



March 2. Experiences in the Gulf of California, by Mr. Rufus A. 



Coleman, United States Bureau of Fisheries, San 

 Francisco, Calif. 



April 6. Erosion in California in Relation to Forestry, by Mr. E. 



N. Munns, Forest Examiner, United States Forest 

 Service, San Francisco, Calif. 



May 4. The Relation of Pacific Coast Rainfall to the World Sys- 



tem of Rain Belts, by Dr. Marsden Manson, San 

 Francisco, Calif. 



June 1. Historical Sketch of the Scripps Institution and Illus- 



trative Examples of certain researches that it has 

 undertaken, by Dr. George F. McEwen, Ocean- 

 ographer, Scripps Institution for Biological Research, 

 La Jolla, Calif. 



July 6. Field Work in Del Norte County during the spring of 



1921, by Mr. Jos. Mailliard, Curator of Ornithology 

 and Mammalogy, California Academy of Sciences, 

 San Francisco, Calif. 



August 3. Diatoms, the Jewels of the Plant World, by Dr. Albert 



Mann of the Carnegie Institution of Washington, 

 Washington, D. C. 



September 7. The 1921 California Academy of Sciences Expedition to 

 the Gulf of California, by Mr. E. P. Van Duzee, 

 Curator, Department of Entomology, California Acad- 

 emy of Sciences. 



