THE NAUTILUS. 19 



Figs. 1-3. A.fuscus Ads., Winchester, Mass. 

 Figs. 4-6. A.fuscus Ads., Grand River, Kent Co., Mich. 

 Figs. 7-9. A.fuscus Ads., Black Lake, Ottawa Co., Mich. 

 Figs. 10-12. A.fuscus euyraptns Pils., New Orleans, La. 

 Figs. 13-15. A.fuscus eugraptus Pils., Reeds L., Kent Co., Mich. 

 Figs. 16-18. A. obscurus Hald., Volusia Co., Fla. 

 Figs. 19-21. A. excentricus Mor., Barton Creek, Travis Co., Tex. 



(2o be Continued.^) 



TWO NEW SPECIES OF EOCENE FOSSILS FROM THE LIGNITIC OF 



ALABAMA. 



BY T. H. ALDRICH. 



UMBRACULUM (EOSINICA) ELEVATUM n. sp. Fig. 1. 



Shell small, outline ovate, depressed conic, substance rather thin, 

 apex partially immersed, pointed backwards to the left. Surface of 

 shell with numerous radiating folds, strongest at the margin, grad- 

 ually becoming weaker and dying out some little distance from the 

 apex, a few concentric striae or growth lines showing one-fourth the 

 distance down from the apex ; interior smooth, polished, rather pearly, 

 the apical point marked by a rounded pearly protuberance ; interior 

 margin fluted. Longest diameter, 18 mm., width 12 mm., height 

 5 mm. 



Locality. Wood's Bluff, Ala., lignitic stage. 



The type is in the State Museum. This shell resembles a limpet, 



FIG. 1. FIG. 2. 



UMBRACULUM ELEVATUM. GASTROCH^ENA STRIATULA. 



and has some of the characters of Tylodina Raf., but I consider it an 

 Umbraculum somewhat like U. plicatalum Martens from Cuba. The 

 interior of our species is very different. It should be placed in a 



