Vol. XI] EVERMANN— DIRECTOR'S REPORT FOR 1921 637 



The total number of accessions recorded during the year was 76, or 

 45,091 specimens. This does not include the three large collections 

 which have been mentioned as remaining uncatalogued. 



The most notable accession was the gift to the Academy of 29,698 

 land and fresh water shells by Mr. Edward C. Johnston of the U. S. 

 Bureau of Fisheries. This large and well kept collection consisted chiefly 

 of species from the Mississippi Valley. All cataloguing, indexing and 

 identification had been done, so that parctically no labor was required 

 to place the collection ready for reference. 



Other accessions which deserve special mention are the series of 

 South Sea Island shells received from Miss M. E. McLellan, Mr. J. 

 August Kusche and Dr. Roy E. Dickerson. A valuable collection of land 

 shells was made in Del Norte County, California, by Mr. Joseph Mailliard 

 and Mr. Chase Littlejohn while pursuing ornithological explorations. 

 They covered a section of the state which was previously unknown 

 conchologically. 



Owing to the expense involved in connection with the Gulf of Cali- 

 fornia Expedition, assistance in the laboratory was cut to a minimum. 

 Therefore as much routine cataloguing and identifying of specimens 

 was not accomplished as might have been expected. 



Extensive use was made of the Academy's collection by various stu- 

 dents, particularly by Mr. Frank M. Anderson of Berkeley, California, 

 formerly curator and now honorary curator, of the department. In 

 1916 and 1917 Mr. Anderson spent several months in the United States 

 of Colombia, where he was engaged in economic petroleum investi- 

 gations. At odd moments he assembled a very considerable collection 

 of recent and fossil mollusks which he generously presented to the 

 Academy. In 1921 he spent much time in arranging and naming this 

 collection and left it in practically perfect museum shape, thus relieving 

 the staff of the department of a large amount of routine labor. 



Mr. Anderson was so impressed with the problems which were partially 

 unfolded by his first geological work in Colombia that he determined 

 to make a second trip. He succeeded in arranging for the financing of 

 an expedition for further study and accordingly departed on November 

 21 with three assistants. The party expects to return some time in the 

 summer of 1922. 



Others nearby who made use of the collections were Professor Bruce 

 L. Clark of the University of California and his students ; Marcus A. 

 Hanna, Merle Israelsky and R. N. Nelson. Mr. Henry V. Howe of 

 Stanford University found much material from the vicinity of Astoria, 

 Oregon, which interested him and he described several new species 

 from it. 



Outstanding loans of material from the department at the end of the 

 year were as follows : 



Dr. S. S. Berry, Redlands, California, chitons; Dr. W. S. W. Kew, 

 U. S. Geological Survey, fossil sea urchins ; Dr. Bruce L. Clark, Uni- 

 versity of California, oligocene fossil mollusks; Mr. Marcus A. Hanna, 



