33 LiGNiTic Stacie 33 



Aldrich has very kindly lent us the large fine specimen shown 

 about 3/2 natural size by fig. 18. 



Localities. — Alabama: Bell's landing; Nanafalia; Woods bluff. 



Type. — From Wood's bluff; Cabinet Ala. Univ., Tuscaloosa, 

 Ala' 



Specimen figured. — Bell's landing: Aldrich's colle<5lion. 



Volutilithes petrosus, PI. 4, iig. i. 



Syn. ]'o!uta petrosa Con., Foss. Sh. Tert. Form., p. 29, Aug., 1H33; ]). 

 41, pi. 16, fig. 2, 1835. 

 " vanuxenii Lea, Cont. to Geol., p. 173, pi. 6, fig. 182, Dec. 



1833- 

 " parva Lea. ibid, p. 173, pi. 6, fig. 181. 

 Athlcla tiiomeyi Con., Proc. Ac. Nat. Sci. Phila., 1853, p. 449. 

 Voluta /iio)neyi Tuome}-, 2d Bien. Rept. Geol. Ala., p. 270. 

 petrosa Tuomey, 2d Bien. Rept. Geol. Ala., p. 272. 

 Volutilithes (Athleta) tuomeyi Con., Jr. Acad. Nat. Sci. Phila., vol. 4, 

 pi. 47, fig. 35, i860. 

 " [Athleta) ttioineri Con., Am. Jr. Conch., vol. 1, p. 24, 



1865. 

 " syinnietricus Con., Wailes' Agr. Miss., 1854, pi. 15, fig. 6; 



Proc. Ac. Nat. Sci. Phila., 1865, p. 260. 

 dianosiis Con., Wailes' Agr. Miss., 1854, pi. 16, fig. i. 

 indenta Con.. Am. Jr. Conch, vol, i, p. 144, p. 211, pi, 

 21, fig. 10. 



impressa Con., Am. Pr. Conch., vol. i, p. 144, p. 211. 

 pi. 20, fig. 3. 

 [Athleta) tiiomeyi, Heilp., Proc. Acad. Nat. Sci. Phila., 

 1880, p. 365. 

 J'oltita Athleta tuoi/iey i A\d., Geol. Surv. Ala., Bull, i, pp. 58, 55. 



52, 50. 

 J 'o/tititithes petrosus Dall, Tr.Wag. Fr. Inst. vSci., vol. 3, p. 75, 1890. 

 ? " precursor BslU, Tr. Wag. Fr. Inst. Sci., vol. 3, p. 84, pi. 



6, fig. I, 1890. 



Athleta tuoiiieyi Clark, V. S. G. S. Bull. 141, p. 65, 

 pi. ID, fig. I, 6. 

 ? I'otutitithes tisdoueusis AM., Bull. .\m. Pal., vol. 2, p. 180. pi. 3, 

 fig. I, a, 1897. 



Conrad's original description.- "Shell subglabrous; body whorl 

 marked with from eight to ten longitudinal folds terminating on 

 the shoulder in compres.sed sul)acute tubercles, which are also 

 distinct on the spire; transver.sely striated at base; two folds on 

 the columella. Length, i '/2 inches. 



