46 BuLLETix 9 238 



the ribs, anteriorh- and posteriorh- showing the microscopic 

 ex-curving striae of Camptojicdes 



This species is of nearly the form and size of C. chodavensis , 

 from which it is distinguished by its small number of ribs, its 

 lack of costal bifurcation and imbrication, and the presence of 

 Camptonedes structure in the interspaces. 



Right valves of this species are somewhat gibbous. 



Localities. — Alabama : Yellow Bluff; Gregg's Landing; Bell's 

 Landing: Lower Peach Tree Landing. Georgia : 

 Ft. Gaines. 



Type. — Gregg's Landing, Harris' collection. 



Chlamys choctavensis, PI. j, fig. 6. 



Svn. P. chodavensis Aid., Bull. Amer. Paleont., vol.i,p. 6S, pi. 6, fig. 7, 

 1895. 



Aldf'ich' s original deso'iption. — Loco citato. 



Localities. — Alabama : Choctaw Comer and Woods bluff. 



Specimeji figured. — Woods Bluff; Paleont. Museum, Cornell 

 University. 



Avicula, sp. PI. 7, fig. 7, a. 



Svn. A. liinula Aid., Bull, i, Geol. Sur\-. Ala., p. 54, 1SS6. 



It is quite possible that this is A. limula Con., but its 

 state of preservation is not sufl&cient to warrant specific identi- 

 fication. 



Locality. — Alabama : Woods Bluff. 



Spedme?i figured. — Paleont. Museum, Cornell L'niversity. 



Pinna, sp. PI. j, fig. 8. 



Syn. Pinna sp. Aid., Bull, i, Geol. S^u-^^ Ala., p. 54, 18S6. 



It is difficult to give the dimensions of this species though the 

 general form can be made out from the fragmentary specimen 

 figured. The markings on the upper moiety of the valve re- 

 semble those of P. argentea Con., but the lower portion does 

 not show the rugose lines of that species. This resembles 

 more closely the Miocene form from Patuxent River, Md. 



Locality. — Alabama : Woods Bluff. 



Speciifien figiired. — Woods Bluff ; Paleont. Museum, Cornell 

 Universitv. 



