28 POST-PLEIOCENE FOSSILS. 



It occurs in great abundance in the Post-Pleiocene beds near Charleston, although it 

 has not as yet been found amongst the living fauna of the State. — T. ^ H. 



Plate VI. Fig. 2, Shell, natural size. 



Locality. Abbapoola Creek. Museum, College of Charleston; Cabinet F. S. H. 



LUCINA RADIANS. 

 Plate VI. Fig. 3. 



Lucina radians, Con., Am. Jour. Sci. and Arts, Vol. 41, p. 347. 



Lucina radians. Con., Foss. Shells Ter. For., p. 70, pi. 40, fig. 3. 



Lucina radians, Tuomey Sf Holmes, Ploiocene Foss. So. Ca., p. 57, pi. 18, fig. 4 and 5. 



Description. Shell orbicular, concentrically and regularly striate ; radiately and 

 obsoletely striate ; lunule excavated. 



The beaks are prominent and acute, the concentric lines are close and well-defined, 

 the radiating lines somewhat irregular, and on the anal side more distant and promi- 

 nent. L. biultilineata resembles the young of this species, but the radiating lines 

 are more regular and the shell more convex than in the species under consideration. 



This pretty species is found on the coast of North and South-Carolina, and in the Post- 

 Pleiocene. It is readily distinguished by its prominent umbones, close and regular 

 concentric striae and obsolete rather irregular radiating lines. — T. S^ H. 



Plate VI. Fig. 3, Shell, natural size. 



Locality. Simmons'. Museum, College of Charleston; Cabinet F. S. H. 



LUCINA TPtlSULCATA. 

 Plate VI. Fig. 4. 



Lucina trisulcata, Con., Foss. Ter. For., p. 71, pi. 40, fig. 5. 



Lucina trisulcata, Tuomey Sf Holmes, Pleiocene Foss. So. Ca., pi. 18, figs. 18 and 19. 



Description. Shell ovate, convex, inequilateral; concentrically striate and channelled; 

 lunule cordate, deeply excavated. 



