rXIO.— Plate ]A1I[. 



fl'iln, piiUkli ochracau, posiici Uueis rinililiux j,<iiiris 

 nifllulil infiis /MilUd!' salmoncii, d<-nlil,i's h,„,ii„itn ,• 

 liilfi-t postico obscure bidiiyuluto, i/ianjine durxuli 

 ■•iitbttlatd, declici, termiuo aciiminalo, inurybie venlrali 

 cuiircxi, ad tfruiiunm. vidide aiirsuiii accUti, umhoni- 

 biis 'injlalia : lulcrc autko liiunli, ro/inido, margine 



uboiif 



•.■!k;. 



OCUKACEOIS I'MO 



smooth, pale vellow 

 <iyte\\ lines, pale sahi 



'■.rcdvaiv, vetili 



Slic-li ovatu, 

 raved jiobterii 

 )H witliiii, tfC'tli 



11- ; |.os. 



tfi-ior side obseui-ely biaiigular, dorsal margin sub- 

 alate, sloped, end acuminated, ventral margin con- 

 vex, strongly sloped upwards at the end, umboes in- 

 flated ; anterior side gaping, i-ounded, dorsal mar- 

 gin excavated in front of tlie umboes. ventral margin 

 ?lope(l upwards. 



S.n. Nicholson's Encvclopa'dia, Art^ Am. Condi., pi. H. 

 f. ,S. 

 I nil) rrocalus. Lea. 



Iltt'i. IJiver.* Georgia, Sdiuxlkill. Delaware. .Savannah. 



3 In. (Mus. aowerby.) 

 'I'liis shell, tio-ured under thi 



to r. a,li, 



•ar> to bear so close 

 1 cannot venture to 



■>pei 



31 i 



Um 



1 ('VI{KEV.\N.\. I'l 

 siibro.mi „iil sal„„u 



nn/iix ulicic 

 'inter lobas 



(Mns. .Sowerby.) 

 /I'std pored, noUdd, obloiiffd. 



npn 



a, riijireiilrke teiiiiiU'r ruijntd, 

 iiiiKjiiis oblique midutd, postice 

 liilere postico obtongo, hllohato, 

 \iiiirgine dorsati dectivi, medio 

 coi.vi'.iv, teriiiiiio uciimiiinto, tobd nnLicd rotimdn, 

 margine rentrnli ante lobain rontravtu ; latere antico 

 snbprodiicto, rnaryine dorsati dectivi. 

 Cuukey's Uxio. Shell small, solid, oblong, ro.seate or 

 snlmon-tnited. coueentrieally finely wrinkled, ob- 

 liquely nndidated near the umboes with large 

 wrinkles, painted jiosteriorly with olive rays; pos- 

 terior side oblong, bilobed. dorsal margin sloped, 

 convex in the middle, acnuiinated at the end ; an- 

 terior lobe rounded, ventral margin eoiitraeted in 

 front of the lobe; anterior ^ide lather produced. dr)r- 

 sal margin sloped. 

 Lea, Obs. on Unio, vol. iii. p. Gl. pi, IS. f. 40. 

 Hab. Stone's River, Tennessee; l)r. C'urrev of Nashville. 



