CONTENTS. 



Fox, William J. Contributions to a Knowledge of the Hymenoptera 



of Brazil, No. 7 (continued) 433 



Stone, Witmer. The Summer Molting Plumage of Certain Ducks . 467 



PiLSBRY, Henry A. A New Species of Thersites 473 



Abbott, James Francis. Notes on Chilean Fishes, with Descriptions of 



New Species of Sebastodes 475 



Stone, Witmer. A New Race of Short-eared Owls 478 



Fowler, Henry W. Description of Ameiurus lacustris Okechobeen- 



sis 480 



Fowler, Henry W. Observations on Fishes from the Caroline Islands 



(Plates XVII, XVIII) 483 



Smith, Charles E. Presentation of a Portrait of Carolus Linnaeus 498 



Vaux, George and William S., Jr. Additional Observations on Gla- 

 ciers in British Columbia (Plate XX) 501 



Eliot, C. Notes on Tectibranchs and Naked Mollusks from Samoa 



(Plate XIX) 512 



Vanatta, Edward G. A New American Species of Zonitoides . . 534 



PiLSBRY, Henry A. Additions to the Japanese Land Snail Fauna 



(Plate XXI) 535 



Report of the Recording Secretary 581 



Report of the Corresponding Secretary ■ . 534 



Report of the Librarian 535 



Report of the Curators 538 



Report on the William S. Vaux Collections 541 



Report of the Biological and Microscopical Section 541 



Report of the Conchological Section 542 



Report of the Entomological Section 544 



Report of the Botanical Section 544 



Report of the Mineralogical and Geological Section 547 



Report of the Ornithological Section 548 



Officers, Council, etc., for 1900 550 



Council for 1900 . 550 



Elections During 1899 551 



Additions to Museum 552 



General Index ^^^ 



Title and Contents. 



