54 PROCEEDINGS OF THE ACADEMY OF [1887. 



of the specimens shows only three large and distant concentric ribs, 

 another one is covered by about nine ribs. 



Turritella carinata H. C. Lea. PI. Ill fig. 1, la. 



Turritella carinataH.C.\^e.3.; Am. Journ. Science vol. XL, Jan. 1841. p 96, pi. i fig. 10. 



Fig. 1 represents the largest specimen which I have from Claiborne 

 and fig. la is a specimen which shows two of the round embryonic 

 whorls. The name of this species is not preoccupied by Turritella 

 carinata I. Lea, because this latter species is apparently identical 

 with a form previously described. 



Eulima lugubris Lea. sp. PI. Ill fig. 8. 



Pasithea lugubris Lea; L Lea. Contrib. to Geology 1833, p. loi, pi. 4, fig. Si. 



Eulima aciculata, Lea. sp. PI. III. fig. 5. 



Pasithea aciculata Lea; L Lea. Contrib. to Geology, 1S33, p. 102, pi. 4, fig. 82. 



The specimen which I figure is from Jackson, Miss. It is 

 apparently identical with Lea's Claiborne species. 



Pasithea guttula Lea. PI. Ill fig. 6. 



Pasithea guttula Lea; L Lea. Contrib. to Geology 1833, p. 104, pi. 4, fig. 86. 

 Cylichna Dekayi, Lea. sp. (var?) PI. Ill fig.lO. 



Bulla Dekayi Lea; L Lea. Contrib. to Geology, 1833, p, 200, pi. 6, fig. 215. 



The specimen which I figure, is from Jackson Miss. It is^ 

 perhaps to be considered a variety of the Claiborne species. 



Tornatina crassiplica Conr. sp. Pi. Ill fig. 9. 



Bulla crassiplica Conr. Journ. Ac. Philad. I, 2nd Ser., PI. 113, pi. 11, fig. 5. 



Ringicula mississippiensis Conr. Pi. Ill fig. 12. 



Ringicula Jitississippiensis Conr. Journ. Ac. Philad. I, 2nd Ser. p. J17; PI. iS, fig. 36. 



Dentalium subcompressum Mr. PI. Ill fig. 13, 13a. 



D. itibcotnpressum Mr.; Am. Journ. Sci. I885, XXIX p. 462. D. subcotnpressuvt\Ax,; 

 Bull. I. Geol. Surv. Ala. 1886, p. 64, PI. 3, fig. 3, 3a. 



Fig. 13 represents a specimen with complete posterior end, 

 showing also in this respect the great similarity of this species to 

 Dentalium comjyressuvi Mr. from the German Oligocene. 



Tellina eburneopsisl Conr. PL III fig. 15a, lob. 



^.Tellina eburneopsis Conr. Am. Journ. Conch. IS65, p. 13S, PI. 10, fig. i7. 



Conrad describes this species from the so-called locality "Entre- 

 prise, Miss." The specimen, which I figure, is from Jackson, Miss. 

 Fig. 15b gives the profile of the posterior side, showing the 

 emargination at the posterior fold. 



