508 



PROCEEDINGS OF THE ACADEMY OF 



[1890. 



Report of Professor of Invertebrate 

 Zoology, 488. 



Skinner, H., M. D. Report of Ento- 

 mological Section, 483. 



Sterki, V. On new forms of Vertigo, 

 31. 



Stone Witmer. Catalogue of the Owls 

 in the Collection of the Academy of 

 Natural Sciences of Philadelphia, 

 124; On birds collected in Yucatan 

 and Southern Mexico, 197, 201 ; Spi- 

 ders of the Family Lycosidae from 

 Pennsylvania and New Jersey, 250, 

 420. 



Wachsmuth, Charles and Frank Spring- 



er. The ])erisomic plates of the Cri- 

 noids, 278, 345. 



Williams, Isnac J., announcement of 

 death of, 189. 



Wilson, Rathmell, announcement of 

 death of, 250. 



Wingate, Harold. Note on Stemoni- 

 tis maxima Qz., 438 ', Report of Bio- 

 logical and Microscopical Section, 

 480. 



Woolman, Lewis. Geology of Artesian 

 Wells at Atlantic City, 11, 444; Ma- 

 rine and Fresh-Water Diatoms and 

 Sponge-Spicules from the Delaware 

 River Clays of Philadelphia, 189. 



