io4 



Bulletin 34 



136 



to 162 1 feet ; Teche No. 1, 876 to 2106; Dusen and Lyons, 

 1530 to i860 ; Shippers, No. 4, 1240 to 1493 ; Jennings- 

 Heywood, No. 27, 1980, No. 28, 800 to 1892, No. 29, 200 

 to 1940, No. 30, 1 169 to 1840 feet, 

 cuneata variety nasuta Dall, Proc. U. S. N. M., 17, p. 98, pi. 7, 

 f. 8, 1894. 



Distribution. — Port Lavaca, Texas (type locality); Point au 

 Fer, La. Recent, in salt water, 

 cuneata variety solida Dall, Proc. U. S. N. M., 46, p. 228, pi. 20, 

 f- 7> 1913- 



Distribution. — Pliocene : Alexandria, La., well at 49 feet. 

 Also Satilla River brackish water Pliocene beds, Atkin- 

 son, Ga. 



cuneata variety galvestonensis Harris, Bull. Am. Pal. 1, No. 3, p. 



93, pi. 2, f. 1, a, b, 1895. 



Distribution. — Galveston deep well at 15 10-2920 feet (Harris', 

 locality ); Prairie Mamou, La., well, with./?, johnsoni, at 

 approximately 2200 feet, Pascagoula Miocene horizon, 

 johnsoni Dall, Science, 20, p, 165, 1892, (as Gnathodori) . Nomen 

 nudum. Tr. W. I. S., 3, p. 337, pi. 22, f. 18, 1892; 

 Proc. U. S. N. M., 17, p. 100, pi. 7, f. 7, 1894; Tr. W„ 

 I. S, 3, p. 905, 1898. 

 mobiliana Johnson, Science, 20, p. 151, 1892. Nomen nudum. 



Distribution. — Upper Miocene or maybe Early Pliocene. 

 In surface exposures, Greene Co., near Vernal, Miss. 

 (Johnson's type locality, 1889); 3^ miles north of 

 Merrill, Miss. ; Shell Bluff, Pascagoula River, Miss., Ten- 

 saw River, (?) Baldwin Co., Ala. Deep wells, Ala., Miss, 

 and La. Very common in Jennings wells. The highest 

 level at which R. johnsoni occurs in the Jennings field is 

 at 1040- 1 120 feet, (Jennings-Heywood Oil Syndicate well 

 No. 29), and the lowest at 2564-2664 feet (bottom of 

 Franklin No. 1). Upper Miocene of deep wells : Mobile 

 Brewery well at 750-770 feet; Mobile, Bascom No. 2, at 

 1 241 feet; Mobile artesian well, 735 feet ; Biloxi, Miss, 

 artesian well, 700 feet; Jennings, La., wells, Bencken- 



