I04- Bulletin 34 136 



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

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

 Hej^wood, No. 27, 1980, No. 28, 800 to 1892, No. 29, 200 

 to 1940, No. 30, 1 1 69 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 aii 

 Fer, La. Recent, in salt water. 

 cuneata variety sollda 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. i, No. 3, p. 

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



Distribution. — Galveston deep well at 1510-2920 feet (Harris', 

 locality ;*; Prairie Mamou, La., well, with 7?. johnsoni, at 

 approximately 2200 feet, Pascagoula Miocene horizon. 

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

 mobiliajia 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, 18S9); 3^ miles north of 

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

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

 and La. Verj^ common in Jennings wells. The highest 

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

 at 1040- 1 1 20 feet, (Jennings-He^^wood Oil Syndicate well 

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

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

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

 1 24 1 feet ; Mobile artesian well, 735 feet ; Biloxi, Miss, 

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



