253 St. Maurice and Claiborne Pelecypoda 253 



PLATE 52 



F igure Page 



1-3. Seme/e It nosa Conrad, 25 mm. ; base of Claiborne Bluff 170 



Fig. 2, shows hinge enlarged. 



3, a reduced interior cast showing pallial line, sinus 

 &c. 



Var. daiboi^nensis, n. var. , 8 mm., Claiborne sand 171 



U. S. Nat. Mus. specimen. 

 Var. of linosa, Keitt's Ravine, S. C. ; 15 mm. 



U. S. Nat. Mus. specimen. 

 Var. claiborneiisis, showing affinities with australina. 

 Length, 10.5 mm. 



Senieleprofunda Conrad, 16 mm., Claiborne sand 171 



Semele australina, n. sp., 17 mm., Orangeburg Dist., S. C... 172 



Seme/e, 40 mm. ; Rio Grande, Tex. Var. australina f 172 



Abra nitens Lea, 5.3 mm. ; Claiborne sand 173 



Abra nitens Lea, 1 1 mm. ; Claiborne sand. Nearly typical form. 

 Abra 7ute7is\^^2., 11 mm. 



Cumingia ? keittensis, n. sp., Keitt's Ravine, S. C 173 



U. S. Nat. Mus. 

 Fig. 14, 30 mm. +• 



14 a, a hinge of same, showing broad "pit" bounded 

 anteriorly by a lamelliform, radiating, cardinal tooth, be- 

 fore which is a very strong, undivided cardinal ; showing 

 also faint posterior lateral. 



15, 35 mm., showing remarkable Strigilla-V\k.Q anter- 

 ior sculpturing of shell. 

 16. Et^vilia tneyeiH Kldixich., 4 mm. ; Claiborne sand 174 



