f 





CONTENTS. 



PiLSBRY, Henry A. Pleurotomaria crotaloides Mort. in the New Jersey 



Cretaceous. (Plate I) 10 



Skinner, Henry, M. D., and Wii,i.iam J. Fox. Report on Extermination 



of Tussock Moth 12 



Pilsbry, Henry A. New Species of the Helicoid Genus Polygyra. ( Plates 



Hand HI) 15 



Pilsbry, Henry A. Descriptions of New Species of Mollusks ... 21 

 CoCKEREivL, T. D. A. The Bees of the Genus Perdita F. Smith ... 25 

 Stone, Wither. The Molting of Birds, with Special Reference to the Plu- 

 mages of the Smaller Land Birds of . Eastern North America. (Plates 



IV and V) 108 



Allen, Harrison, M. D. Note on a Uniform Plan of Describing the 



Human Skull 17© 



Rhoads, Samuel N. Contributions to the Zoology of Tennessee. No. 3, 



Mannnals • • 175 



Frazer, Dr. PerSifor. Two Supposed New Trap Dykes in Chester Co., 



Penna ■ 206 



PiLSBRY, Henry A. On a Collection of Barnacles 208 



Pilsbry, Henry A. Pugnus parvus 208 



Brown, Amos P. The Crystallization of Molybdenite 210 



Keller, Ida A., Ph. D. The Coloring Matter of the Aril of Celastrus scan- 

 dens 212 



