112 PROCEEDINGS OF THE ACADEMY OF 



On leave granted, a vote of thanks was ordered to be tendered to Mr. 

 I. W. Gregory, for the body of the Bengal tiger, presented this even- 

 ing. 



April 26$. 



Vice-President Bridges in the Chair. 



Forty members present. 



The report of the Biological Department for the present month was 

 read. 



On report of the respective Committees, the following papers were 

 ordered to be printed in the Proceedings : 



Descriptions of Eight New Species of UNIONID-E, from Georgia, Mississippi, 



and Texas. 



BY ISAAC LEA. 



TJnio spissus. Testa laevi, elliptica, subventricosa, postice obtuse angulata 

 subaequilaterali ; valvulis crassis ; natibus prominulis ; epidermide striata, 

 rufo-fusca, obsolete radiata ; dentibus cardinalibus magnis, erectis, compressis, 

 crenulaiis, in utroque valvulo subduplicibus ; lateralibus longis, crassis subcur- 

 visque ; margarita vel purpurea, vel salmonis colore tincta et iridescente. 



Hab. Satilla River, Wayne County, Georgia. T. C. Downie. 



TJnio corvus. Testa, laevi, subtriaDgulari, subcompressa, inaequilaterali, pos- 

 tice obtuse biangulata ; valvulis crassis, antice crassioribus ; natibus subpro- 

 minentibus ; epidermide nigricante, superne glabra, polita, inferne striata ; 

 dentibus cardinalibus subgrandibus, subconicis striatisque ; lateralibus longis 

 curvisque ; margarita alba et iridescente. 



Hab. Buckhead Creek, Burke County, Georgia. Bishop Elliott ; and Ogee- 

 chee River, Georgia. Prof. Hanley. 



TJnio Burkensis. Testa laevi, transversa, compressa, ad latere planulata., in- 

 aequilaterali, postice biangulata ; valvulis crassiusculis ; natibus prominulis ; 

 epidermide fusco-flavicante, inicante et obsolete radiata; dentibus cardinalibus 

 breviusculis, compressis, acuminatis ; lateralibus longis rectisque ; margarita 

 purpurascente et iridescente. 



Hab. Buckhead Creek, Burke County, Georgia. Bishop Elliott. 



TJnio aureus. Testa laevi, subtriangulari, compressa, ad latere paulisper 

 planulata, subinaequilaterali ; valvulis subcrassis, antice crassioribus ; natibus 

 subelevatis, ad apices acuminatis ; epidermide aurea, striata, obsolete radiata; 

 dentibus cardinalibus crassis, erectis, striatis, in utroque valvulo duplicibus ; 

 lateralibus curtis et obliquis ; margarita alba, et iridescente. 



Hab. Texa3. W. Newcomb, M. D. 



TJnio curtus. Testa laevi, obliqua, ad umbones valde tumida, antice trun- 

 cata, postice obtuse angulata, valde inaequilaterali ; valvulis percrassis, antice 

 crassioribus ; natibus elevatis, crassis, t'ere terminalibus; epidermide tenebroso- 

 castanea, ad apices virescente, obsolete radiata; dentibus cardinalibus sub- 

 grandibus, compressis, acuminatis, obliquis ; lateralibus crassis subcurvisque ; 

 margarita argenteil et iridescente. 



Hab. Tombigbee River, Columbus, Mississippi. Wm. Spillman, M. D. 



TJnio permiscens. Testa laevi, obovata, inflata, postice late rotundata, valde 

 in33quilaterali ; valvulis tenuibus ; natibus prominulis; epidermide tenebroso- 

 fusca, nigricante, obsolete perradiata, nitida ; dentibus cardinalibus parvulis, 



[April, 



