152 LIST OF CONTRIBUTORS. 



Pilsbry, H. A. and Edward G. Vanatta. Continued. 



A partial revision of the Pupa? of the United States. P 



1900, 582 

 On certain rhachiglossate Gastropoda eliminated from the 



Aquillida?. P '04, 592 



— Mollusca of Flint and Caroline Islands, in the Central 

 Pacific. P '05, 291 



— Notes on some Hawaiian AchatmellidaB and Endodontidge. 

 P '05, 570 



— On two Hawaiian Cerithiidae. P '05, 576 



— Hawaiian species of Endodonta and Opeas. P '05, 783 



— On some Pacific Cerithiidae. P '05, 787 



— Notes on Polinices didyma, with description of a new Aus- 



tralian species. P '08, 555 

 — See Ball, W. H., and E. A. Pilsbry 

 See Walker, Bryant, and H. A. Pilsbry 



Poeppig, Edward. Nova generis Capromys Desm. species, j iv, 11 

 Poey, Felipe. Descriptions des poissons nouvelles on pen connues. 



P '63, 180 

 Porter, Thomas C. On Mollusca from the Juniata River, Penn- 

 sylvania. P '63, 212 



A list of the Carices of Pennsylvania, P '87, 68 



Porter, Wilmatte. See Cockerell, T. D. A., and W. Porter 

 Potts, Edward. Sensitive organs in Asclepias. P '78, 293 



On the supposed sensitive character of the glands of the 



Asclepiadaceae. P '79, 205 



Fresh- water sponges of Fairmounit Park. P '80, 330 



On fresh-water sponges. P '80, 356 



Some new genera of fresh-water sponges. P '81, 149 



A new form of fresh-water sponge. P '81, 176 



The genus Carterella vs. Spongiophaga pottsi. P '81, 460 



Three more fresh-water sponges. P '82, 12 



Sponges from the neighborhood of Boston. P '82, 69 



Earth-worms drawing leaves into the ground. P '82, 285 



Note on Manayunkia speciosa. P '84. 21 



Fresh-water sponges as improbable causes of the pollution 



of river-water. P '84, 28 



— Some modifications observed in the form of sponge spicules. 

 P '84, 184 



— On a supposed new species of Cristatclla. P '84. 193 



— On Paludicella erecta. P '84. 213 



