PLEIOCEXE FOSSILS. 57 



L U C I N A RADIANS. — Con. 

 Plate XVIII. Figs. 4 and 5. 



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

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



L. testa orUculata, convexa, concentrice striata; radiatim obsolete irregulariter striata; 

 lunula excavata. 



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, and 

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

 prominent, L. multilineata 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 living on the coast of North and South Carolina, and is abundant 

 in the Post Pleiocene. It is readily distinguished by its prominent umbones, close and 

 regular concentric striae and obsolete rather irregular radiating lines. 



Plate XVIII. Fig. 4, Interior of right valve. 

 " 5, Exterior of left valve. 



■Locality. Darlington District, Museum. College of Charleston. 



LUCINA SQUAMOSA. — Lam. 



Plate XVIII. Figs. 6 and 7. 



Lucina squamosa, Lam., An. Sans, ver., Vol. 5, p. 542, 



Lucina squamosa, Con., Foss. Ter. For., p. 38, pi. 20, fig. 1. 



Lucina speciosa, Rogers, Trans. Amer. Phil. Soc, new series, Vol. 5, p. 333, fig. 1. 



Lucina squamosa, Con., Foss. Ter. For., p. 38, pi. 20, fig. 1. 



L. testa conveza, inequilateralis, radiatim costata; latere anali brevi; latere buccali sub- 

 producto. 



