268 AMERICAN JOURNAL 



Explanation of Plate 27, 



Fig. 1. CoLUMBELLA TURRICULA, Whitfield. (Enlarged.) — 

 P. 261. 



" 2. PisANiA Claibornensis, Whitfield. — P. 259. 



" 3. Pleurotoma capax, Whitfield. — P. 261. 



« 4. " PERSA, Whitfield.— P. 262. 



" 5. Fusus TORTiLis, Whitfield. — P. 260. 



" 6. MiTRA Haleanus, Whitfield.— p. 263. 



" 7. Monoptigma Leai, Whitfield. — P. 261. 



" 8. Cerithium vinctum, Whitfield. The specimen fig- 

 ured is not an adult shell, and does not show the 

 contraction of the last volution, — P. 265. 



"9*10. ^ ATiGA {Girodes) Alabamiensis, Whitfield. — P. 265. 



" 11. " ERECTA, Whitfield.— P. 264. 



" 12. VoLUTA Newcombiana, Whitfield. — P. 263. 



" 13. PoTAMiDES Alabamiensis, Whitfield. — P. 266. 



"14*15. Yelutina (Otina) EXPANSA, Whitfield. (Greatly 

 enlarged.)— P. 265. 



" 16. Crassatella tumidula, Whitfield. — P. 267. 



" 17. Cucull^a macrodonta, Whitfield, — P. 267. 



