THE NAUTILUS. 107 



survey of San Francisco Bay. A thorough study of the fauna 

 of a given area presents many interesting facts pertaining to dis- 

 tribution, and a basis for making further observations. The 

 number described are 173 species and 13 varieties collected by 

 the survey or previously recorded from the San Francisco Bay, 

 San Francisco Co., or the Farallon Islands. The number ob- 

 tained by the survey within the limits of San Francisco Bay 

 comprises 81 species and varieties. The illustrations are ex- 

 cellent, and charts show the local distribution of 18 of the more 

 common species. A map of San Francisco Bay showing the 

 dredging stations is also given. C. W. J. 



THE PRODUCTIVITY OF INVERTEBRATE FISH FOOD ON THE 

 BOTTOM OF ONEIDA LAKE WITH SPECIAL REFERENCE TO MOL- 

 LUSKS. By Frank C. Baker (N. Y. State College of Forestry, 

 Tech. Pub., no. 9, vol. 18, no. 2, 1918, pp. 1-264. A most 

 interesting publication that brings to our attention a great factor 

 little considered by most conchologists, i. e. , the importance of 

 the smaller fresh-water mollusks as fish food. Animal life was 

 found to be most abundant at the 6-foot contour and a sandy 

 bottom the richest in animal life. C. W. J. 



A NEW MARINE MOLLUSK OF THE GENUS CERITHIOPSIS FROM 

 FLORIDA. By Paul Bartsch (Proc. Biol. Soc., Wash., vol. 31, 

 p. 135, 1918). Cerithiopsis vanhyningi, Tampa Bay. 



FOUR NEW MOLLUSKS FROM THE PHILIPPINE ISLANDS. By 

 Paul Bartsch (Proc. Biol. Soc., Wash., vol. 31, p. 153, 1918). 



CHANGES AND ADDITIONS TO MOLLUSCAN NOMENCLATURE. By 

 W. H. Dall (Proc. Biol. Soc., Wash., vol. 31, p. 137, 1918). 

 The following new generic and section names are proposed: 

 Tromina, Algaroda, Littorivaga, Algamorda, JBoetica, Iselica, 

 Elachisina, Kurtziella, Progabbia, Crawfordia, Boreomelon, Phena- 

 coptygma and Alrimitra. 



