34 DESCRIPTION OF FIFTY-TWO SPECIES OF UNIONID^. 



Proc. Acad. Nat. Sci., 1872, p. 155. 

 Hob.— ConsiSSinga. Creek, Monroe Co., East Tennessee, Miss A. E. Law. 



My cabinet. 

 Diam. 1-1, Length 1-6, Breadth 25 inches. 



Shell smooth, rather oblong, somewhat inflated, inequilateral, subbiangular 

 behind, rounded before; substance of the shell thick, thicker before; beaks 

 somewhat prominent; ligament large and dark brown; epidermis reddish-brown, 

 roughened towards the margin, rayless, with rather close marks of growth; umbo- 

 nial slope rounded ; posterior slope narrow elliptical, with obscure indented lines ; 

 cardinal teeth rather small, somewhat compressed and crenulate, slightly disposed 

 to be treble in the right valve ; lateral teeth short, thick, oblique and straight ; 

 anterior cicatrices distinct, rather large and deeply impressed ; posterior cicatrices 

 distinct and well impressed; dorsal cicatrices placed on the upper side of the 

 cavity of the beaks ; cavity of the shell rather shallow ; cavity of the beaks some- 

 what deep and obtusely angular; nacre white and somewhat iridescent. 



Bemarks. — Among a number of Uniones from East Tennessee a single specimen 

 of this species was sent by Miss Law to Dr. Lewis. In outline it is very near to 

 suhflavus (nobis), but it is a stouter, more inflated species, may easily be distin- 

 guished by its having a rougher epidermis, more close marks of growth, and in 

 being darker in the epidermis. The teeth also differ, being much smaller and 

 thinner in suhflavus. The beaks being eroded in the specimen under examination, 

 the undulations cannot be described. 



Unio conspicuus. pi. U, fig. 3 L 



Testa Ifevi, elliptica, subinflata, insequilaterali, postice obtuse angulata, antice rotundata ; valvulia 

 crassis, antice crassioribus ; natibus prominulis, ad apices undulatis ; epidermide rufo-fusca, per- 

 radiata; dentibus cardinalibus parviuscnlis, crenulatis, compresso-conicis, ia utroque valvulo 

 duplicibus ; lateralibus praslongis, lamellatis, parum curvatis ; margarita conspicua, persalmonia 

 et formoso-iridescente. 



Shell smooth, elHptical, somewhat inflated, inequilateral, obtusely angular behind 

 and rounded before; valves thick, thicker before; beaks somewhat prominent, undu- 

 late at the tips ; epidermis reddish-brown, radiate all over the disk ; cardinal teeth 

 rather small, crenulate, compressed conical, double in both valves ; lateral teeth 

 very long, lamellar and somewhat curved ; nacre very bright, deep salmon colored 



and beautifully iridescent. 



Proc. Acad. Nat. Sci., 1812, p. 156. 

 2Ja&._-Yadkin River, near Salisbury, North Carolina, C. W. Wheatley. 

 My cabinet and cabinets of C. M. Wheatley and Dr. Hartman. 



