382 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Seb. 



One important piece of work accomplished during the year has been the 

 cataloguing and arranging in a new metal cabinet of the insect types in 

 possession of the Academy. Six hundred and seventy-eight types, repre- 

 senting 461 species, have been entered in our register of type specimens, 

 most of which are either holotypes or allotypes, in a few cases only were 

 paratypes included where types were not available. The work of entering 

 these records on the type register as well as the writing of the species 

 labels for most of the insects arranged during the year and the prepara- 

 tion of a large number of record cards, has been done for the department 

 by Mr. J. R. Carlson. The accumulation and preservation of the types 

 of our west coast insects is a duty the Academy owes to future students 

 of insects here in the west and it is earnestly hoped that those describing 

 new species of insects from the west coast will see that the holotypes of 

 such species are deposited in the collection of this Academy where they 

 will be as safe from destruction as it is possible to make them. In addi- 

 tion to the types of all species described from material in the Academy 

 collection quite a number have been received from friends of the Academy. 

 Mr. W. M. Giflfard of Honolulu has given the Academy the types of two 

 rare beetles from the Rivers collection (Amblychila baroni and Necydalis 

 harbarce), and those of all the Hemiptera described from material taken 

 by him in California, 46 in number, and the paratypes of the Hymenoptera 

 described by Mr. Rohwer from his material taken in the Sierras in 1916; 

 Messrs. Lovett and Cole have donated the types of 42 species of Oregon 

 Diptera published by them in 1919; Mr. M. C. Van Duzee has donated the 

 types of six species of Diptera described by him in his paper on the genus 

 Medeterus ; Mr, J. R. Malloch, the types of two species of Diptera de- 

 scribed by him ; Mr. E. O. Essig, the types or cotypes of 21 species of 

 plant-lice published by him in 1918 ; and Mr. E. A. Dodge, the type of a 

 new butterfly (Pamphila pawnee) described by his brother, G. M. Dodge, 

 in 1874. Types of 15 species have been added during the year from the 

 description of Academy material. 



Excepting the month of July, the Department of Entomology has kept 

 "open house" every Saturday afternoon for those who wished to use or 

 inspect the collections or to meet with others interested in this line of 

 study. These gatherings have been well attended most of the days and 

 perhaps have served a useful purpose in bringing together our local 

 students and such visiting entomologists as were able to attend. During 

 the year the Academy has lost through removal elsewhere three of its 

 most regular attendants and co-workers, Mr, and Mrs. L. R. Reynolds, who 

 have removed to Mexico City, and Mr. Ralph Hopping to Vernon, B. C. 



The routine work of mounting and labeling the numerous specimens 

 added during the year has taken up so much of the time of the curator 

 that very little systematic work has been accomplished. A small report on 

 the Hemiptera of the Canadian Arctic Expedition, prepared last year, 

 has been published by the Dominion Government at Ottawa and another 

 paper describing 28 new species of Hemiptera is now in the hands of the 

 printer. The same cause has operated to hinder the classification and 

 arrangement of the Academy's collection in all orders. 



