1856.] 



103 



The collection consists of numerous remains of Mammalia and Clielonia 

 from the Mauvaises Terres of Nebraska, a large number of mollusca 

 from the cretaceous beds, and an extensive series of plants from a ter- 

 tiary formation. Dr. C A. Pope, with his usual liberality, has granted 

 the Academy the use of a large hall furnished with cases, for the pur- 

 poses of a museum, in the Medical College. The president of the 

 Academy, than whom none could be more worthy, is Dr. George Engle- 

 man. In conclusion, Dr L. offered in furtherance of the objects of 

 the new Academy the following : 



Resolved, That this Academy present to the Academy of Science of 

 St. Louis the second series of the Journal and the Pioceedings. 



Mr. Lea announced the death of Dr. John C. Warren, of Boston, a 

 Correspondent of the Academy, setat. 79 years. 



Dr. Leidy offered the following resolution which was adopted : 



Resolved, That the State Medical Society, shortly to hold its session 

 in this city, be invited to visit the Museum of the Academy on the last 

 Wednesday of this month. 



Mai/ 27th. 

 Vice-President Bridges in the Chair. 



The Committee on Mr. Durand's paper, read 6th inst., reported in 

 favor of publication in the Journal. 



The Committee on Mr. Lea's paper, read 13th inst., reported in favor 

 of publication in the Proceedings. 



Description of four New Species of Exotic Uniones. 

 By Isaac Lea. 



Unio Coloradoensis. Testa lasvi, elliptica, infJata, valde ma?quilaterali ; val- 

 "vulis crassis ; natibus elevatis magiiisque; epidermide luteo-castanea, obscure 

 radiata et polita ; dentibus cardinalibus magnis, duplicis, acuminatis crenatu- 

 latisque ; lateralibus magnis praelongis, lamellatis subcurvisque ; margarita 

 }>urpurea et iridescente. 



Ilab. Rio Colorado, Texas. B. W. Budd, M. D, 



Unio Nuttalliaiv-cs. Testa Ifevi, elliptica, subinflata, inajquilaterali ; valvulis 

 tenuibus ; natibus prominulis ; epidermide olivacea, eradiata, valde polita; 

 dentibus cardinalibus parvis, rectis, compressis crenulatisque ; lateralibus sub- 

 curtis, subrectis lamellatisque ; margarita salmonis colore tincta et iridescente. 



Ilab. India. Prof. Thomas Nuttall. 



Unio Cambodiensis. Testa Isevi, elliptica, subinflata, inaequilaterali ; valvulis 

 subtenuibus; natibus prominentibus, ad apicem undulatis ; epidermide castanea, 

 eradiata, polita ; dentibus cardinalibus longis, rectis lamellatisque ; lateralibus 

 sublongis, lamellatis subrectisque ; margarita albd et iridescente. 



JIab. Takrong river at Korat, Cambodia. S. R. House, M. D. 



Unio Newcombianus. Testa corrugato-sulcata, rotundata, subconipressa, 

 inaequilaterali ; valvulis crassis ; natibus elevatis prominentibusque ; epidermide 

 tenebroso-olivacea, corrugata ; dentibus cardinalibus submagnis, duplicis snb- 

 compressisque ; lateralibus subbrevis, crassis subcurvisque ; margarita alba. 



Ilab. Lake Nicaragua. W. Newcomb, M. D. 



