496 



PROCEEDINGS OF THE ACADEMY OF 



[1889. 



Report of Professor of Invertebrate Pa- 

 leontology, 439. 



Report or Professor of Invertebrate Zo- 

 ology, 440. 



Report of Recording Secretary, 423. 



Report of Treasurer, 442 



Ridings, James H. Report of Ento- 

 mological Section, 434. 



Rothrock, J. T., M. D. The Sand- 

 dunes of Lewes, Del., 134. 



Ryder, J. A. On the fore and aft poles, 

 the axial differentiation and a possi- 

 ble anterior sensory apparatus of Vol- 

 vox minor, 138. Heterocercy in Ba- 

 trachia, 155. The hypertrophied 

 hairs on Ampelopsis, 155. The Phy- 

 logeny of the Sweat Glands, 158, 190. 

 The Origin and Meaning of Sex, 18'J, 

 190. 



Safford, J. M. and A. W. Vogdes. De- 

 scription on new species of fossil 

 Crustacea from the lower Silurian of 

 Tennessee with remarks on others not 

 well known, 155, 166. 



Schaffir, Chas. Report of Botanical 

 Section, 435. 



Schimmel, Jo'-e O., announcement of 

 death of, 410. 



Scott, Wm. P. Notes on the osteology 

 and systematic position of Dinictis 

 Felina, Leidy, 158, 211. » 



Sections, meetings of, 49. 



Sharp, Benjamin, M. D. Activity in 

 Donax, 347. Change of habit caus- 

 ing change of structure, 347. Re- 

 port of Professor of Invertebrate Zo- 

 ology, 440. 



Shoemaker, Geo. Y., announcement of 

 death of, 155. 



Shufeldt, R. W. Observations upon the 

 development of the skull in Neo- 

 toma fuscipes ; a contribution to the 

 morphology of the Rodentia (Plates 

 I and II), 14. 



Smith, Uselma C, election to Council, 

 158. 



Sterki. V., M. D. On new forms of 

 Vertigo, 410. 



Stone, Witmer. On Pratinocola salax 

 and allied species, Verr., 48, 78. 

 Catalogue of the Muscicapidae in the 

 Collection of the Academy, 135, 146. 

 Catalogue of the Owls, Strigae, in the 

 collection of the Academy, 348. 



Tower, Charlemagne, announcement of 

 death of, 190. 



Treasurer, annual report of, 442. 



Williamson, Isaiah V., announcement 

 of death of, 47. 



Wdliston, S. W. The Stemalis Mus- 

 cle, 13, 38. 



Wilson, William P. The production of 

 aerating organs on the roots of swamp 

 and other plants, 67. On the use of 

 Bambusa Stem in incandescent elec- 

 tric lighting, 129. 



Wingate, Harold. Tilmadoche com- 

 pacta, Wing., n. sp., 48. Notes on 

 Enteridium Roseanum, 156. The 

 Spores of the Myxomycetes, 188. 

 Note on Orthotricha, 189. Orcadel- 

 la operculata Wing., a new Myx- 

 omycete, 280. 



Winsor, Henry, announcement of death 

 of, 344. 



