- XXVI - 



A. R. Grote. On Orthesia ferrugineoides. 



B. WaterJwuse HawMns. Pelvis of Hadrosaurus. 

 Thomas Meehan. Influence of Nutrition on Form. 

 Thomas Meehan. The Drosera as an Insect Catcher. 

 Wm. M. Oahh. On the Indian Tribes of Costa Rica. 

 S. R. Roherts. Compressed Peat. 



James Lewis, M. D. Description of New Species of American Land 



and Fresh-water Shells. (Piate 23) 

 Elliott Coues, M.D. Fasti Ornithologise Redivivi. — N." 1. Bartram's 



Travels. 

 Edward D. Cope. On the Cretaceous Beds of the Galisteo. 

 Joseph Willcox. On the Flight of Grasshoppers. 

 Wm. Gahh. Genesis of Cassidaria striata, Lam. (Piate 24) 

 E. L. Berthoud. On the Occurrence of Uranium, Silver, Iron, etc. 



in the Tertiary Formation of Colorado Territory. 

 Geo. A. Kònig. Note on Mr. Berthoud's Paper. 

 Wm. M. Gobi). Note on Mr. Berthoud's Paper. 

 Thomas Meehan. Observations on Lilies. 

 Joseph Leidy, M. D. Remarks on Rhizopods. 

 Joseph Leidy, M. D. Quercus heterophylla. 

 Harrison Alien, M. D. On the Notation of Ribs. 

 Aug. R. Grote. On North American Noctuse. 

 H. R. Morrison. Notes on the Noctiiidse, with descriptions of 



certain new species. N.** II. 

 Thomas Meehan. Naturai Hybrids ; Quercus heterophylla. 

 Thomas Meehan. Hybrid Juglans; Hybrids of Pyrus sinensis. 

 Henry G. Chapman, M. D. On Trichocephalus aftìnis, Dies. n the 



Castor Glands of the Beaver. 

 Persifor Fra^er, Jr. On the Mesozoic Red Sandstone of the Atlantic 



States. 

 Persifor Frazer, Jr. On Dialysis in Oyster Culture. 

 Persifor Frazer, Jr. On Heat and Chemical Action. 

 Edward D. Cope. On the supposed Carnivora of the Eocene of the 



Rocky Mountains. 

 Edward D. Cope. On a new Genus of Lophobranchiate Fishes. 

 J. A. Ogden, M. D. Description of a new Species of Bird of Pa- 

 radise of the genus Ptiloris, in the coUection of the Academy. 

 Henry G. Chapman, M. D. Observations on the Structure of the 



Manatee. 



