90 Bulletin 4 204 



EXILIA. 



Exilia pergracilis, PI. 9, fig. r. 



Syn. E. pergi^acilis Con., Jr. Ac. Nat. Sci., Phila., vol. iv, 

 i860, p. 291, pi. 46, fig. 34. 



Conrad's original d/^5'<:r^)^i'/f;z.^" Narrow-fusiform; volutions 

 twelve, convex, with slightly curved, numerous, narrow ribs, and 

 fine closely-arranged revolving lines; spire rather longer than 

 aperture, first two whorls smooth; beak perfectly straight, mi- 

 nutely striated to the extremit5^ 



''Locality. — Alabama. Dr. Showalter." 



This species sometimes attains a length oi i}4 inches or even 

 more, but generally it is not over i inch long. 



Localities. — Mississippi: Yt. mi. N. of Ripley. 



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

 Hill P. O.; Dale's Branch. 



7>'/>^.— Phila. Ac. Nat. Sci. 



PYROPSIS. 



Pyropsis perula, PI. 9, fig. 2. 



Syn. Pyivpsis perula Aid., Bull. No. i, Geol. Surv. Ala., 

 1886, p. 25, pi. 3, fig. 4. 



AldricW s original description. — "Shell depressed above, spinous; 

 whorls seven; spire flat, showing only the upper part of the 

 whorls; suture partially concealed by the spines of the next 

 succeeding whorl overlapping. 



"Surface covered with strong, transverse, raised, cordlike lines, 

 which are armed with short, erect spines on the canal, becoming 

 obsolete at its base. Spines erect, closed, flaring upward and 

 circling the periphery of the body whorl, the one nearest the 

 aperture being the largest. Aperture ovate; outer lip cut by 

 the transverse lines, smooth within; labium strongly reflected, 

 smooth, suddenly expanding at the anterior end of aperture; 

 callus becomes thick in old specimens; canal long and narrow. 



''Locality. — Wood's Bluff, Ala., in lower bed; also Matthews' 

 Ivanding, Ala. 



"The largest specimen, if perfect, would be (2") two inches 

 broad and over (4") four inches long." 



Localities. — Alabama: Dale's Branch; i mi. W. of Oak Hill; 

 Matthews' Landing. 



The specimen figured herewith is very small and imperfect 



