219 Midway Stage 105 



Alabama: Naheola; Matthews' lyanding; i mi. N. 

 of Midway; 2 mi. N. of Snow Hill; Josh Hun- 

 ter's; Dale's Branch; ^ mi. W. of Graveyard 

 hill; 2 mi. W. of Oak Hill; i>^ mi. S. W. of 

 Palmer's mill, on McConnico's plantation; at 

 Palmer's mill, see frontispiece; Cole's place, i mi. 

 W. of Palmer's mill; i mi. S. W. of Clayton; 

 iy3 mi. N. E. of Clayton. 



Georgia: Base of Midway, Chattahoochee river; 

 not far above the mouth of Sandy creek, Chatta- 

 hoochee river. 



'^ ■ ■ APORRHAIS. 



Apoi'rhais sp., PI. 10, fig. 9. 



We have as yet obtained no really good specimens of this 

 genus in the Midway. The figure represents an imperfect speci- 

 men obtained from near the southeast line of Hogan's Survey, 

 Falls county, on the west bank of the Brazos. It is quite prob- 

 ably A. gracilis Aldrich, since that author lists it from Black 

 Bluff, Ala. Similar specimens were found by the writer near 

 Tehuacana, Texas, about 50 feet below the Midway limestone 

 ledges. A cast in our last summer's collection is from i mile 

 north of Midway; it is with little doubt A. gracilis. 



CERITHIUM. 



Cerithiuvz {Companile) claytonense, PI. 10, figs. 10, 11. 



Syn. C. claytone?ise Aid., Geol. Surv. Ala., 1894, p. 246, pi. 

 13, figs. I, a, b. 



Aldricli' s origiyial description. — "Shell large, rapidly tapering, 

 whorl remaining, thirteen, each banded by a broad nodulous 

 raised space alternating with four or five deeply cut spiral lines, 

 sometimes showing a fine raised line in the depressions, colum- 

 ella showing internally two plications between the whorls. 



' ' No perfect specimens yet found but the species is v^xy dis- 

 tinct and much larger than hitherto known from our Eocene. 

 Eength of largest specimen 125 mm. Specimen showing inter- 

 nal structure from the National Museum; the other from the 

 State Survey collection." 



The locality whence these large specimens were derived was 

 doubtless McConnico's plantation, i^ mi. S. W. of Palmer's 

 mill. Mr. Stonewall McConnico very generously gave us a 

 specimen nearly equal in size to that shown on plate 10, figure 11. 



