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



thousand specimens were collected, duplicates of most of them being sent 

 direct to Professor Sargent. 



During the year, the Academy purchased a label printing machine for 

 the purpose of labelling the trees and shrubs of the park with their scien- 

 tific names. The Academy bore the initial expense but hereafter the Park 

 authorities pay for the materials and furnish the labor. Mr. Eric Walther, 

 one of the gardeners, has been assigned to this work because of his 

 knowledge and enthusiasm, but so far, has been able to give but a month 

 of his time to the work on account of the press of other duties. However, 

 about 1,200 labels have been printed and attached to the trees and shrubs, 

 chiefly in the parts of the park most frequented. This represents about 500 

 species and varieties and 200 genera. 



The exhibition of flowers in bloom out of doors, both cultivated and wild, 

 has been continued in the vestibule of the Museum, throughout the year. 

 Mrs. Johanna Wilkens has been most faithful in keeping all in cleanliness 

 and order, and to her is due great credit for the success of the exhibition. 

 Mrs. Marian L. Campbell and Mrs. E. C. Sutliflfe, as well as other members 

 of the Botanical Club, have been assiduous in keeping up the supply of wild 

 flowers, and Eric Walther has made collections from the Park. 



The usual activities of the Botanical Department have continued during 

 the year. The Botanical Club has held frequent meetings and excursions 

 and the evening class of the gardeners has met weekly when the curator 

 has been in San Francisco. In addition to this, lectures have been given to 

 various clubs and popular articles have been contributed to magazines. 



Department of Entomology 

 By E. P. Van Duzee, Curator 



The work in the Department of Entomology during 1919, as in the pre- 

 vious year, was largely confined to the acquisition, determination, and 

 arrangement of North American insects, especially those from California. 

 Additions to the department during the year number 17,891 specimens, of 

 which 12,504 were taken by the curator, 1,020 were added through the 

 efforts of Mr. J. R. Slevin while in Lower California last July, 1,096 

 through purchase from Mr. R. H. Beck, and 3,271 were presented by 

 friends of the Academy. This donated material came in small lots but it 

 added many interesting species to the Academy collection. From Dr. F. E. 

 Blaisdell the Academy received 665 specimens ; from Dr. F. C. Clark, 546 

 specimens; from Mr. C. L. Fox, 448, including a remarkably fine series 

 of Diptera or two-winged flies from Mt. Rainier, Washington ; from Mrs. 

 E. P. Van Duzee, 260 specimens; from Mr. J. O. Martin, 252 specimens, 

 largely named species to fill vacancies in the Academy series; from Dr. 

 E. C. Van Dyke, 239 specimens; from Mr. E. A. Dodge of Santa Cruz, 

 189 specimens, including some interesting Catocalae and a special collection 

 of Tabanidse, or "horse-flies," made by his brother, the late G. M. Dodge, 

 in the Mississippi Valley; from Ralph Hopping, 182 specimens; from 

 Mr. J. Preston Clark of Boston, 148 specimens taken by Mr. J. A. Kusche 



