NATURAL SCIENCES OF PHILADELPHIA. 89 



Unio punctatcs. Testa laevi, elliptica, ad latere planulata, valde inaequi- 

 laterali, postice et antice rotundata ; valvulis crassis, antice aliquanto crassi- 

 oribus ; natibus vix promiuulis ; epidermide olivacea, ; radiis punctatis 

 undique indutis ; dentibus cardinalibus parvis, compresso-conicis crenula- 

 tisque ; lateralibus longis, crassis subcurvisque ; margarita argentea et 

 iridescente. 



JIab.-Ca.ney Fork, Tennessee, Dr. Edgar ; and Tuscumbia, Alabama, 

 B. Pybas. 



Unio amabilis. Testa laevi, triangulari, subinflata, inaequilaterali, postice 

 angulata, antice rotunda, valvulis crassiusculis, antice crassioribus ; natibus 

 subprominentibus, ad apices undulatis ; epidermide vel luteola vel fuscescente, 

 obsolete radiata ; dentibus cardinalibus parvis, obliquis corrugatisque ; late- 

 ralibus sublongis, obliquis corrugatisque ; margarita vel alba, vel dilute sal- 

 nionia et valde iridescente. 



Hub. Butler, Taylor Co., Georgia. H. M. Neisler. 



Unio Lyonii. Testa laevi, subrotunda, subcompressa, inaequilaterali : val- 

 vulis subcrassis, antice crassioribus ; natibus prominentibus ; epidermide 

 rufo-fusca, late radiata ; dentibus cardinalibus subgrandibus, subcompressis 

 corrugatisque ; lateralibus crassis, obliquis subcurvisque ; margarita dilute 

 salmonia et valde iridescente. 



Hub. East Tennessee. Major S. S. Lyon, U. S. E. 



Unio proprids. Testa laevi, oblonga, subinflata, inaequilaterali, postics 

 obtuse angulata, antice rotunda; valvulis subtenuibus, antice crassioribus; 

 natibus prominulis, ad apices undulatis ; epidermide lutea, eradiata ; dentibus 

 cardinalibus parvis, acuminatis, erectis, compressis ; lateralibus sublongis 

 subcurvisque ; margarita vel purpurea vel salmonis colore tincta et irides- 

 dente. 



Rob. Lafayette, Georgia. Rev. G. White. 



Unio Cromwellii. Testa laevi, elliptica, subinflata, valde inaequilaterali, 

 postice rotundata, antice rotunda ; valvulis subtenuibus, antice crassiusculis ; 

 natibus subprominentibus, ad apices concentricis plicatis ; epidermide minute 

 striata, fusca, vel virenti, radiata ; dentibus cardinalibus parvis, compressis, 

 corrugatis, in utroque valvulis duplicibus ; lateralibus sublongis subcurvisque ; 

 margarita purpurescente et valde iridescente. 



Jlab. Kiokee Creek, near Albany, Dougherty Co., Georgia. B. M. Crom- 

 well, M. D. 



Unio marginis. Testa elliptica, inflata, valde inaequilaterali, postice et 

 antice rotundata; valvulis crassiusculis, antice crassioribus; natibus sub- 

 prominentibus; epidermide striata, fusca, marginata, obsolete radiata, den- 

 tibus cardinalibus parviusculis, valde crenulatis ; lateralibus subcurtis 

 rectisque ; margarita alba et valde iridescente. 



Hab. Blue Springs, Dougherty Co., Georgia. Bishop Elliott. 



An Examination of the Birds of the genus CHRYSOMITRIS, in the Museum of 

 the' Academy of Natural Sciences of Philadelphia. 



BY JOHN CASSIN. 



Genus CHRYSOMITRIS, Boie. 



(Genus Chrysomitris, Boie, Isis, 1828, p. 322.) 



1 . Chrysomitris. 



1. Chrysomitris spinus, (Linnaeus.) 



Fringilla spinus, Linn.; Syst. Nat., i. p. 181, (1758.) 

 PI. Enl. 485. Gould, B. of Eur., pi. 197. Naum., B. of Germ., pi. 125. 



1865.] 



