335 Midway Stage 121 



Syn. Trochus alabamensis Aid., Bull. No. i, Geol. Surv. Ala., 

 1886, p. 35, pi. 5, fig. 16. 



Aldrich's original description. — "Shell trochiform, whorls sev- 

 en, suture deeply impressed, surface marked with four to six 

 strong, revolving lines, with finer ones between, crossed by nu- 

 merous fine longitudinal striations, which are strongest at the 

 intersecting points; base of the body whorl with finer lines. 

 Umbilicus deep, defined by a sharp carina; aperture rounded; 

 outer lip crenate on its edge, the crenulations running some dis- 

 tance within; inner lip smooth. 



''Locality. — Matthews' Landing, Ala. 



"Generally is smaller than the type; not rare." 



Localities. — Alabama: Matthews' Landing; i mi. W. of Oak 

 Hill. 



PLEUROTOMARIA. 



' ' Pleurotomariaf ^ sp. , PI. 12, figs. 25, a. 



Syn. Pleurotoniariaf Aid., Geol. Surv. Ala., 1894, p. 247. 



Mr. T. H. Aldrich has kindly sent me these two figures of a 

 specimen which was labelled "Allenton, Wilcox Co., Ala." It 

 belongs to the State Museum at Tuscaloosa. Without seeing 

 the specimen it is unwise to attempt a description of it. From 

 the appearance of the figures, however, it is almost certain that 

 it is from the horizon of beds 18 or 19 of the section on p. 31. 



FISSURELLA. 

 Fissurella niediavia n. sp., PI. 12, figs. 26, a. 



Specific characterization. — General form and size as indicated 

 by the fragment figured; surface marked by about 60? subequal 

 ribs which are crossed by transverse lines making small, raised 

 folds on the top of the ribs. 



It has seemed worth while to name, describe and figure this 

 fragment since it is the only member of this genus known from 

 the lower Eocene. 



Locality. — Alabama: Top of bed 19, ij^ mi. S. W. of Pal- 

 mer's mill. 



Type. — Paleontological Museum, Cornell Univ. 



