46 Bulletin 4 160 



Fig. 40 of Gabb's work is, according to Dr. Safford's notes, 

 from a "bank near, or on the old stage road 2 miles south of 

 Middleton." Others are from the R. R. cut 2 miles east of Mid- 

 dleton, and still others from the limestone on Muddy creek east 

 of Middleton. 



Localities. — Texas: Horn Hill and Tehuacana, Limestone Co.; 

 Brazos river, 3 miles above mouth of Pond creek. 



Arkansas: if^ mi. N. of Bradford, St. L., I. M. 

 & S. R. R. ; Johnson's well, Capitol Hill, Little 

 Rock; Sect. 15, i S., 14 W.; N. W. of N. E. )i. 

 Sect. 8, I S., 13 W.; Sect. 18, 2 S., 15 W.; Cabot, 

 Lonoke Co. 



Tennessee: East and south of Middleton 2 miles; 

 McDonald's mill 4 miles S. W. of Middlton. 



Alabama: i mi. N. of Midway; i mi. W., ij^ mi. 

 S. W. and i mi. S. of Palmer's mill; R. R. cut at 

 Snow Hill; R. R. cut y^ mi., and 2 mi. N. of Snow 

 Hill; 3 mi. N. E. of Snow Hill; Pine Barren creek 

 2 mi. S. of Snow Hill; Graveyard Hill, hard ledge; 

 Josh Hunter's; ? 3 mi. E. S. E. of Troy; Dr. 

 Smart's, i mi. S. or S. W. of Clayton, near R. R. ; 

 Lee's, near Harrison's mill, 3 mi. S. W. of Clay- 

 ton; I & i)^ mi. N. E. of Clayton. 



Georgia: Chattahoochee river, near mouth of 

 Sandy creek, and ? at base of bluff at Ft. Gaines. 



Type. — Collection of Jas. M. Safford, Vanderbilt Univ., Nash- 

 ville, Tenn. 



Ostrea pulaske?isis, PI. i, figs. 2, a, b, c; 3, a. 



Syn. GryphcBa vomer Saff. , Geol. of Tenn., 1869, p. 419. 



''Gryphcea pitcheri M.ox\..V' White. Proc. U. S. Nat. 



Mus., vol. iv, 1881, p. 137. 

 O. pulaskensis Har., Ark. Geol. Surv., vol. ii, 1892, p. 



40, pi. I, figs. 3, a, b, c, d. 

 Gryphcsa vomer l^angdon, Geol. Sur. Ala., 1894, p. 416. 



Harris' original description. — "Outline of the larger valve 

 rightangle-triangular; a carination from the umbo to the posterior 

 basal margin forming the hypothenuse, the basal margin the base, 

 and the shorter margin from umbo to base the perpendicular with 

 proportional lengths of 8, 7 and 5 respectively; beak generally 

 very incurving; carination often very pronounced; between it and 

 the margin of the valve are one or two more or less distinct sulci; 

 surface comparatively smooth, though possessing a few slight 



