74 BuivLETIN II 74 



Turritella clevelandia, var. PI. lo, fig. 2. 



Syn. T.f carinata Aid., Geol. Surv. Ala., Bull, i, p. 52, 1886. 



T. clevelandia Har., Geol. Surv. Ark,, Rept. for 1892, vol. 2, p. 

 176, pi. 6, fig. 9, 1894. 



This L,ignitic form corresponds more nearlj^ to clevelandia than 

 any other described species; though it is with some hesitation 

 that I place this under that name. The sutures are more deeply 

 impressed in clevelandia and the spiral marking more pronounced, 

 as will appear from the original description of that species: 



HarMs' original descriptio7i. — "Size and general form as indi- 

 cated by the figure; whorls 13 or 14; generally ornamented by 

 about three prominent revolving lines and a few subordinate 

 ones; from the uppermost and lowermost of the revolving lines 

 the whorls slope abruptly to the suture, while between these lines 

 the sides of the whorls are straight. ' ' 



* The type of clevelandia is from the Jackson beds of Arkansas 

 and is deposited in the colledtion of the U. S. Nat. Mus. 



Lignitic localities. — Ala.: Woods bluff; Ozark; 4 mi. above 

 Hamilton bluff; Hatchetigbee?; 3 mi. s. w. of Thomasville. 



Specimen figured. — Woods bluff; Paleontological Museum, Cor- 

 nell University. 



Turritella mortoni. Pi. 10, fig's. 3, 4. 



Syn. T. mortoni Con., Jour. Acad. Nat. Sci. Phila., vol. 6, p. 221, pi. 10, 

 fig. 2, 1830. 

 T. carinata de Greg. {ex. parte) Mon. Faun. Ala., 1890, p. 122, pi. 



II, fig's. 3,4, 5. 

 T. mortoni Har., Bull. Am. Pal., vol. i, p. 224, 1896. 



Conrad's origi7ial description. — "Shell turreted, conical, thick, 

 with revolving distant, and finer intervening, striae; whorls with 

 an elevated acute carina near the base of each; volutions about 

 eleven-, and the striae are the largest on the elevations of the 

 whorls, which are slightly concave above and abruptl}' terminate 

 at the sutures; the lines of growth on the last whorl are strong 

 and much undulated. 



"I dedicate this species to m}^ friend Dr. S. G. Morton, who 

 has so ably illustrated the geology of this country connecfted with 

 its organic remains. 



