TABLE OF CONTENTS 



Officers and Committees for 1918 hi 



Proceedings for 1918 ix-xiv 



A New Flving-Squirrel from the Philippine Islands, by Wilfred 



H. Osgood 1-2 



A New Flying-Squirrel from Eastern Asia, by Gerrit S. Miller, 

 Jr 3-4 



Description of New Species of Shells chiefly from Magdalena 



Bay, Lower California, by W. H. Dall 5-8 



A Revision of the Viviparous Perches, by Carl L. Hubbs 9-14 



New Chinese Fishes, by John Treadwell Nichols 15-20 



Five New Mammals from Arizona and Colorado, by E. A. 



Goldman „ 21-26 



A New Genus and Three New Species of North American 



Membracidae (Hemiptera), by E. D. Ball 27-30 



A New Subspecies of Chipmunk from the Yellowstone National 



Park, by Vernon Bailey 31-32 



A New Bullfinch from China, by J. H. Riley... 33-34 



A New Hare from British East Africa, by N. Hollister 35-36 



A New Unstalked Crinoid from the Philippine Islands, by 



Austin H. Clark. 37-38 



Three New Bats from Haiti and Santo Domingo, by Gerrit S. 



Miller, Jr 39-40 



A New Crinoid from New Zealand, and another from Tasmania, 

 by Austin H. Clark. 41-44 



Notes on District of Columbia Juncaceae, by Frederick V. 

 Coville and Sidney F. Blake 45-46 



Mutanda Ornithologica. Ill, by Harry C. Oberholser.. 47-50 



Notes on Clemmys, by Albert Hazen Wright 51-58 



Notes on the Bee Genus Andrena (Hymenoptera), by Henry L. 

 Viereck... 59-60 



Occurrence of a European Solitary Bee (Andrena wilkella 



Kirby) in the Eastern United States, by J. R. Malloch. 61-64 



Notes and Descriptions of Some Anthomyiid Genera, by J. R. 



Malloch. 65-68 



A List of Families and Subfamilies of Ichneumon-flies or the 

 Super-family Ichneumonoidea (Hymenoptera), by Henry L. 

 Viereck 69-74 



New Plants of the Pacific Northwest, by Charles V. Piper 75-78 



Two New Species of Fossil Marine Shells from California, by 



Paul Bartsch 79-80 



A New Fossil Pyramidellid Mollusk from the West Coast of 



America, by Paul Bartsch 81-82 



Description of a New Subspecies of the Little Yellow Bittern 



from the Philippine Islands, by Alexander Wetmore 83-84 



The Dimorphs of Species of Chaitophorus, by A. C. Baker 85-88 



Description of a New Snapping Turtle and a New Lizard from 

 Florida, by Leonhard Stejneger 89-92 



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