VIll. 



INDEX. 



on the so-called Crotalus durissus, 

 and C. adamanteus of authors, 415. 



Le Conte, Dr. John L., don. to mus., 

 i., vii., viii., xvi., xxvii., xliv. ; don. 

 to lib., Ixvi. ; on some fossil Suiline 

 Pachydernas, from Illinois, 3 : notice 

 of a fossil Dicotyles, from Missouri, 

 5 ; on the difference between primor- 

 dial and introduced races, 35 ; on a 

 natural classification of the Histrini, 

 36; synopsis of the Parnidae of the 

 United States, 41 ; synopsis of the 

 Eucnemides of teinperate N. Ameri- 

 ca, 45; remarks on a new locality 

 for Casteroides Ohioensis, 53 ; on 

 some fossil Pachyderms, from Illi- 

 nois, 56; on some Coleoptera, from 

 Missouri and New Mexico, collected 

 by Dr. Woodhouse, 65 ; synopsis of 

 the Anthicites of the United States, 

 91; on the Coccinellidse of the U. 

 States, 129 ; description of a new 

 species of Trombidium, 145; descrip- 

 tion of a new species of Sciurus, 149; 

 synopsis of the Scydmaenidae of the 

 United States, 149 ; attempt at a 

 synopsis of the genus Geomys Raf., 

 157 ; Catalogue of the Melyrides of 

 the United States, 163; remarks on 

 the genus Dipodomys, 224 ; on the 

 Mexican Ant, 225; descriptions of 

 twenty new species of Coleoptera in- 

 habiting the United States, 226 ; 

 synopsis of the Silphales of America, 

 north of Mexico, 274 ; synopsis of the 

 species of Abraeus inhabiting the U. 

 States, 287 ; remarks on the speci- 

 mens of Scalops in the collection of 

 the Academy, 326 ; synopsis of the 

 Meloides of the U. States, 328; syn- 

 opsis of the Atopidag Rhipiceridae and 

 Cyphonidae of the United States, 350; 

 synopsis of the Endomychidae of the 

 United States, 357 ; description of 

 new Coleoptera from Texas, collect- 

 ed by the Mexican Boundary Com- 

 mission, 439. 



Leidy, Dr. Joseph, don. to mns., xxvii., 

 Ixviii.; don. to lib., v., xviii., xxviii., 

 liv.,lv., lix., Ixii., Ixvii.; remarks on a 

 fossil vertebra, from Ouachita, La., 

 52; osteology of the Hippopotamus, 

 52, 53 ; on the fossil Tortoises, from 

 Nebraska, 59 ; on " Red Snow," from 

 the Arctic regions, 59 ; on two crania 

 of extinct species of Ox, 71 ; on the 

 Honey Ant, of Mexico, 72 ; reference 

 to a fossil tooth of a Tapir, 106 ; re- 

 marks on the fossil Ox, 117 ; remarks 

 on the fossil Edentata of N. America, 



117 ; remarks on some fossil teeth of 

 Rhinoceros, from Nebraska, 2 ; on a 

 fossil Turtle, from Nebraska, 34; re- 

 marks on a fossil Delphinus, from the 

 Miocene of Virginia, and a fossil Cro- 

 codileaYi reptile, from New Jersey, 

 35; remarks on Tapirus Haysii, 148; 

 remarks on various fossil teeth, 241 ; 

 on some fossil fragments from Nat- 

 chez, Miss., 303 ; observations on re- 

 mains of extinct Cetacea, from the 

 green sand of New Jersey, and from 

 South Carolina and Virginia, 377 ; 

 remarks on a collection of fossil 

 Mammalia and Chelonia, from the 

 Mauvaises Terres of Nebraska, 392 ; 

 remarks on a fragment of a jaw of an 

 extinct Saurian, from Prince Ed- 

 ward's Island, 404 : character ex- 

 plained of nodular bodies found in the 

 tails and fins of fishes, from Cold 

 Pond, N. H., 433. 



Le Gal, E., don. to lib., xiv. 



Lepsius, Dr. R., don. to lib., xxxi. 



Letters from Individuals 

 Adams, Com., U. S. N., 71. 

 Bache, Prof. A. D., 105. 

 Baird, Prof. S. F., 438. 

 Barry, Rev. C, 433. 

 BischofF, Dr. G. G., 147. 

 Blanding, Dr. Wm., 240. 

 Boue, Dr. M., 435. 

 Boyd, Lieut., U. S., 125. 

 Chambers, Dr. R. C, 241. 

 Costa, Sig. Achille, 325. 

 Cresson, Prof. J. C, 323. 

 Curtis, Rev. M. A., 105. 

 Daniel, Dr. Wm. F., 71. 

 Davis, J. Barnard, 395. 

 Dawson, J. W., 325. 

 Ducachet, Rev. Dr., 71. 

 Dun^lison, Dr. R., 240. 

 Durand, E., 191. 

 Edwards, Amory, 52. 

 Ehrlich, Prof., 125. 

 Espinoza, Signor Juan, 324. 

 Fahnestock, G. W., 147. 

 Ford, Dr. H. A., 375. 

 Fox, Rev. Charles, 433. 

 Frazer, Prof. J. F., 223. 

 Gibbes, Dr. R. W., 403. 

 Gilman, Charles, 438. 

 Gibbons, Dr. H., 304. 

 Gistl, Dr. J., 117. 

 Grube, Prof. E., 433. 

 Haidinger, Wm., 189. 

 Hamilton, James M., 378. 

 Hartlaub, Dr. G., 325. 

 Hoy, Dr. Philo R., 404. 

 Kane, Hon. J. K., 438. 



