454: - [December^ 



During the past year, from January 1, to Decennber 1, 1853, the following 

 papers have been read before the Acadenny, referred to Committees, and upon 

 their report, published in the Journal and Proceedings of the Academy. 



By John Cassin, three, to wit : 1. Description of a new species of the genus 

 Scalops, from Oregon, in the collection of the United States Exploring Expe- 

 dition. 2. Catalogue of the Hirundinidae, m the collection of the Academy of 

 Natural Sciences of Philadelphia, July 1, 1853. 3. Descriptions of new species 

 of Hirundinidae and Psittacidoe, specimens of which are in the Collection of the 

 Academy of Natural Sciences of Philadelphia. 



By Mr. T. A. Conrad, three, to wit : 1. Synopsis of the North American 

 Naiades. 2. On new species of Unio published in the Journal. 3. Monograph 

 of the genus Fulgur. 



By Frederick A. Genth, Ph. D., two, to wit : 1. On a variety of gray Copper, 

 perhaps a new mineral. 2. On Ovvenite, a new mineral. 



By Charles Girard, five, to wit : 1. Descriptions of new Nemertians and Pla- 

 narians, from the coast of the Carolinas. 2. Observations upon the American 

 species of the genus Esox. 3. Note upon a nest constructed by Catfishes. 

 4. Descriptions of some new Fishes, from the liver Zuni. 5. List of Reptiles, 

 collected in California by J. L. Le Conte, with descriptions of New Species. 



By the Rev. M. J. Berkeley, M. A., F.L.S., and Rev. M. A. Curtis. Exotic 

 Fungi, from the Schweinitz Herbarium, in the Academy of Natural Sciences of 

 Philadelphia. 



By Spencer F. Baird and Charles Girard, four, to wit: 1. Descriptions of new 

 species of Fishes, collected by Captains R. B. Marcy and George B. McClellan, 

 in Arkansas. 2. Descriptions of new species of Fishes, collected by Mr. John 

 W. Clarke, in the United States and Mexican boundary survey, under Lieut. 

 Col. James D. Graham. 3. Descriptions of new species of Reptiles, col- 

 lected by the United States Exploring Expedition. 4. Researches upon Ne- 

 mertians and Planarians. 



By Francis N. Green, M. D. Chemical investigation of remains of Fossil 

 Mammalia. 



By S. S. Haldeman. Descriptions of some new species of Insects, with 

 observations on described species. 



By Edward Hallowell, M. D. On some new Reptiles from California. 

 By Adolphus L. Heermann, M. D. Catalogue of the Oological Collection in 

 the Academy of Natural Sciences, Philadelphia. 



By Pliny R. Hoy, M. D. Three, to wit : Notes on the Ornithology of Wis- 

 consin, three papers. 



By Prof. W. G. Harvey and Prof. J.W. Bailey. New species of Diatomaceae 

 collected by the United States Exploring Expedition. 



By Isaac Lea. 1. Notice of the Mya nodulosa. Wood. 2. On the Castalia sul- 

 cata, Krauss. 



By Major John Le Conte, F.L.S. 1. Description of a new species of Pacane 

 Nut. 2. Descriptions of three new species of Arvicola, with remarks upon 

 other North American Rodents. 3. Observations on Crotalus horridus and 

 C. durissus. 



By John L. Le Conte, M. D., seven, to wit : 1. Descriptions of twenty new 

 species of Coleoptera, inhabiting the United States. 2. Synopsis of the Sil- 

 phales of America, North of Mexico. 3. Synopsis of the Scaphidilia of the 

 United States. 4. Synopsis of the species of the Histeroid genus Abraeus, in- 

 habiting the United States. 5. Synopsis of the Meloides of the United States. 

 6. Synopsis of the Endomochydae of the United States. 7. Synopsis of the 

 Atopidos, Rhipiceridae and Cyphonidae of the United States. 



By Lieut. Maury, U. S. N. Observations on Atmospheric Pressure. 

 By Dr. S. Weir Mitchell. On the influence of certain states of Respiration on 

 the Pulse. 



By M. C. Read. Notes on the birds of Northern Ohio. 



By S. W. Woodhouse, M. D. 1. Description of a new species of pouched 

 Rat, of the genus Dipodomys, Gray. 2. Description of a new species of Mouse, 

 of the genus Hesperomys. In all 44. 



