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



Benito, 6 ; San Luis Obispo, 1 ; Santa Clara, 41 ; San Diego, 2 ; San Francisco, 

 2; San Mateo, 15; Tuolumne, 269. 



Specimens from other localities are: Arizona, 5; Florida, 7; Idaho, 55; 

 Illinois, 1 ; Louisiana, 1 ; New Mexico, 1 ; New York, 3 ; North Carolina, 1 ; 

 Oregon, 5; Texas, 2; Utah, 9; Washington, 62; Europe, 25; Asia, 25; Africa, 

 102; South America, 1; Mexico, 944; Porto Rico, 1; New Zealand, 1; Austral 

 Islands, 9; Tuamotu Islands, 16; Society Islands, 3; Christmas Island, 8; 

 Marshall Islands, 4; East Indies, 6; Sumatra, 1; Indian Ocean, 2; Australia, 

 2; Philippine Islands, China and Siam, 3135. 



The classification, labeling, cataloging, and arrangement of the collection 

 was continued during the year. 



A descriptive account of all the reptiles of Western North America has 

 been published. 



Specimens have been studied by A. I. Ortenburger of the American Museum 

 of Natural History, Dr. E. R. Dunn of Smith College, Dr. F. N. Blanchard 

 of the University of Michigan, and Dr. Tracy I. Storer of the University of 

 California. 



John Van Denburgh, Curator. 



Department of Invertebrate Paleontology 



The activities connected with the Department of Invertebrate Paleontology 

 during the calendar year 1922, centered chiefly in five major exploration proj- 

 ects which are mentioned below in chronological order. 



On January 1, Mr. Frank M. Anderson, for many years curator of the 

 department and lately honorary curator, was in Colombia, South America, 

 continuing his studies of geology and paleontology which were begun there in 

 1914. He returned to the United States in June and the large collection he 

 made arrived soon afterwards. , This was deposited in the Academy where the 

 collector has been engaged for some time in properly arranging and classifying 

 it. The acquisition of this material makes the Academy by far the foremost 

 museum depository of Colombian paleontology. 



In April, the curator again visited the region of Coyote Mountain, Imperial 

 County, California, for the purpose of checking certain geological observations 

 before the final completion of the report upon that locality. The collections 

 from there which have been borrowed from the University of California 

 and the United States National Museum were all returned early in the year. 



In May, the curator, accompanied by Mr. Edward P. Van Duzee of the 

 Department of Entomology, paid a short visit to the region about Clear Lake, 

 Lake County, California. The primary purpose of the trip was the collecting 

 of fossils found in that vicinity as well as the ascertaining of the status of the 

 unique freshwater molluscan fauna of Clear Lake. Both undertakings were 

 successful. It was learned that the remarkable species of shells of the lake 

 have become almost, if not entirely, extinct, due to the activities, residents 

 said, of the German carp which have been introduced there. 



On July 16, the curator left San Diego as a member of the expedition 

 which was sent to Guadalupe and other islands off the west coast of Lower 



