NATURAL SCIENCES OF PHILADELPHIA. 
267 
By John Cassin, two, to wit : ' ' Description of a new Tanager from the Isth- 
mus of Darien, and Note on Selenidera spectabilis ;" ''Catalogue of Birds col- 
lected by A. A. Henderson, M. D., U. S. N., at Hakodadi, Island of Jesso, Japan, 
with notes." 
By T. A. Conrad, " Observations on a group of cretaceous fossil Shells from 
Tippah Co., Miss., with descriptions of fifty-five new Species," published in the 
Journal. 
By John Xantus de Vesey, "Descriptions of two new Species of Birds from 
the vicinity of Fort Tejon, California." 
By George W. Fahnestock, " Memoranda of the efi'ects of Carburetted Hy- 
drogen upon a collection of exotic Plants. ' ' 
By James C. Fisher, M. D., " Description of a new Species of the Grenus 
Argynnis." 
By Charles Girard, M. D., " Notes upon various new Genera and new Species 
of Fishes in the Museum of the Smithsonian Institution," etc. 
By Edward Hallowell, M. D., " Descri^jtions of several new North American 
Reptiles." 
By Edward Hallowell, M. D., and Joseph W. Jones, M. D., "Notes upon 
the Anatomy and Habits of Reptiles." 
By Wm. A. Hammond, M. D., U. S. A., two, to wit: " Secondary formation 
of Blood Crystals," read before the Biological Department, "Observations on 
the effects of certain Vegetable Diuretics," read before the Biological De- 
partment. 
By Henry Hartshorne, M. D., "Abstract of the Proceedings of the Biologi- 
cal Society of Philadelphia," read before the Biological Department. 
By F. V. Hayden, ' ' Notes to a Second Edition of a Geological Map of Ne- 
braska and Kansas, " etc. 
By T. Charlton Henry, M. D., U. S. A., " Description of a new Toxostoma, 
from near Fort Thorn, New Mexico. ' ' 
By Isaac Lea, LL. D., eight to wit : " Descriptions of exotic Genera and Spe- 
cies of the Family Unionidse." "Descriptions of a new Helix and two new 
Planorbes." "Descriptions of eight new Species of Unios." "Descriptions 
of four new fresh water Mollusks from the Isthmus of Darien and Honduras." 
' ' Description of seven new Species of Margaritana and four new Species of 
Anodonta." " Descriptions of twelve new Species of Uniones and other fresh 
water shells of the United States." " Description of the embryonic forms of 
thirty-eight Species of Unionidse," published in the Journal. "New Unionidse 
of the United States," published in the Journal. 
By John L. Le Conte M. D., three, to wit: " Descriptions of new Species 
of Coleoptera, chiefly collected by the U. S. and Mexican Boundary Survey 
under Major W. H. Emory." "Catalogue of Coleoptera of the regions adja- 
cent to the Boundary Line between the United States and Mexico," published 
in the Journal. ' ' Note on the Species of Eleodes found within the United 
States." 
By Joseph Leidy M. D., two, to wit : " Notice of Remains of extinct Verte- 
brata from the Valley of the Niobrara River;" "Contributions to Helmin- 
thology. ' ' 
By F. B. Meek and F. V. Hayden, M. D. " Descriptions of new organic Re- 
mains, collected in Nebraska Territory, etc." 
By J. H. Slack, "Catalogue and notes on the Egyptian Antiquities in the 
collection of the Academy of Natural Sciences of Philadelphia." 
By William Stimpson, four, to wit: " Prodromus Descrix)tionis Animalium 
evertebratorum, quae in Expeditione ad Oceanum Pacificum septentrionalem, a 
Republica Federata missa, Cadwaladaro Ringgold et Johanne Rogers ducibus, 
observavit et descripsit W. Stimpson, Partes tertia, quarta, quinta et sexta." 
By W. J. Taylor, " Mineralogical Notes." 
By P. R. Uhler, " Descriptions of new species of Neuropterous Insects, col- 
lected by the North Pacific Exploring Expedition, under Com. J. Rogers. 
1858.] 
