PROCEEDINGS 



ACADEMY OF NATURAL SCIENCES 



PHILADELPHIA. 



18 8 4. 



committee of publication: 



Joseph Leidy, M. D., Geo. H. Horn, M. D., 



Edward J. Nolan, M. D., Thomas Meehan, 



John H. Redfield. 



Editor : EDWARD J. NOLAN, M. D. 



PHILADELPHIA : 



ACADEMY OF NATURAL. SCIENCES, 



S. W. Corner Nineteenth and Race Streets. 



18 85. 



