f 



Two specimens Ilclix Leidyi ITall and Meek, from the Mauraises Terrcs of 

 Nebraska. Presented bj- Dr. F. V. Haydeu. 



Jaws of Shark, from Coast of Florida. Presented bj- Dr. G. "Watsou. 



April Isi. 



Fourteen specimens, nine species Sponges ; five specimens Echini ; three 

 specimens Ophiothrix; one specimen Sertularia ; four specimens Spatangus ; 

 lAventy-four specimens Corals ; thiily specimens recent Shells ; seven specimens 

 Fossil Shells ; ten fragments fossil Cetacean bones ; two specimens ea'S's of 

 Fulgnr; two specimens two species Fungi; four specimens Rocks and one mass 

 of Yermetus. From Pvcy West and Manatee River, Florida. Presented I'V 

 Si Ashmead, Esq. 



A collection consisting of about 500 species of dried plants, from the Moun- 

 tains of Pennsylvania. Presented by C. E. Smith, Esq. 



Calcareous Tufa, enclosing Lymnea umbrosa, from near Mohawk, N. J. Pre- 

 sented by Mr. I. Lea. 



Two specimens Cyclas, from Alabama. Presented by T. M. Peters. 



Pisa n. s. ; Panopeua Herbstii ; Lupa, young?; Gelasimus macrocheles ; 

 Sesarma cinerea ; Alpheus heterocheles ; GonodactylUs chiragra. From Key' 

 "West and Manatee. Presented by S. Ashmead, Esq. 



Libinia dubia ; Platycarcinus Sayi ; Platyonychus ocellatus ; Grapsus pictus ; 

 Calappa marmorata ; Calappa, n. a.? seVen species of six genera, from W. Indies. 

 Presented by Mr. I. Lea. 



Bignonia incarnata (fruit); Scolopendl'a ? From Trinidad. Pre- 

 sented by Dr. Samuel Lewis. 



April 8tk. 



Seten hundred specimens, eighty species, of Cuban Coleoptera; Presented by 



G. J. Barnet, Esq., of Cuba, through Mr. Guex. 



Agelaius ph(cuicius and Fringilla canadensis. Presented by Mr. John Krider, 

 Eighteen specimens plants ; four minerals ; (beryd, amethyst, quartz, and 



felspar.) Presented by Dr. 0. P. Ilart, of Pittsburg, Penn. 



April lUth. 



One half of lower jaw of Casteroides Ohioensis ; first upper molar Megalony:;* 

 Jeffersonii ; one canine and fragment of upper jaw with three molars of Castor 

 fiber fossilis ; one milk molar of Mastodon ; and two molat's of Casteroidts 

 Ohioensis. From Prof. Silliman, in exchange. 



Pinna, from Teresa Bay, Florida ; three specimens Calcedony ; a Diodon 

 from Key "West ; and three Calcedonized corals, from Tampa Bay, Florida. Pre* 

 sented by S. Ashmead. 



Seventy specimens (65 species) of reptiles. In eschange from the Jardin des 

 Plantes, Paris. 



Angora Cat. Presented by Mrs. "Wm. "Wister, Germantown. 



One Pleuronectes ; one Murrena ; two Ophisaurus; and one Coluber. Pre- 

 sented by Mr. "\Vm. G. Burke, through Mr. Cassin. 



Syngnathus fasciatus, from S. America. From Dr. Dook. 



April 22d. 



Sixty-six species Marine Algae, from the Coast of Florida. Presented by g. 

 Ashmead. 



Native Silver, from Lake Superior. Presented by Mr. Iloopes, 



Fifteen specimens Triton niger and one of Phrynosoma. Presented by t)n 

 Uhler. 



Marine Algoe collected by Mr. S. Ashmead, at Key "West, Florida, during the wintef 

 of 1855, '56, and presented by him '. Padiaa pavonia, Lam., Sand Key, Florida | 



