CONTENTS OF VOLUME FOURTH. 



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BY WILLIAM COOPER. Page- 

 Description of five species of Yespertilio 63 



On two species of Molossus 64 



On two species of Plecotos "" 



BY ISAACHAR COZZENS. 



Description of three new fossils 167 



BY H. B. CROOM. 



On tbe genus Sarraccnia 9» 



BY JAMES B. DANA. 



On a new mineralogical Nomcclalure 9 



BY ASA GRAY. 



Remarks on the structure and affinities of the CcratophyllacciE- ... 41 



Melanthacearuui America; septenlrionalis revisio 106 



BY JOHN C. JAY. 



Description of new species of shells 169 



BY WILLIAM L. JONES. 



Ou a new species of Woodpecker 489 



BY GEORGE N. LAWRENCE. 



On a new species of Anser 171 



Ou a new 6pecics of Procellaria 17.') 



BY JOHN LE CONTE. 



On a new species of Apus 156 



BY JOHN L. LE CONTE . 



Monograph of the genus Passimachus 142 



On Colcoptcra indigenous to the eastern and western continents - - . 168 



Catalogue of Gcodephagous Coleoptera of the United States - - - - 173 -J. 

 BY 0. W. MORRIS. 



On the quantity of Rain at different Heights 496 



Meteorological Observations 600 



BY JOHN H. REDFIELD. 



On the fossil fishes of Connecticut and Massachusetts 36 



Description of some new species of shells 163 



On the characters of Cyprtea reticulata and C. histrio 477 



Descriptions of new species of Bullia and Marginclla 491 



BY JOHN TORREY. 



On the discovery of Vauquelinite in the United States 76 



New genera and species of North American plants fcO 



BY JAMES F. WARD. 



On the appearance of the Pyrrhula enucleator in the vicinity of New York - 61 



