19 LiciNiTic Stack 19 



"Diff/ofs/ous. — Length a little less than i inch, transverse 



diameter .45 inch. 

 "'Locality. — Six miles above Claiborne, Ala." 

 Localities. — Ala.: Gregg's landing, Tuscahoma and according 



to iVldrich, at Bell's landing al.so. 

 Type and specimen Jio^urcd. — Gregg's landing, Paleont. Mus. 



Cornell University. 



Pleurotoma ( — ?) siphus, IM. 2 fij^. m. 



vSyii. /■". siphus Aid., Bull. Am. Pal., vol. i, p. 64, pi. 4, fig. 2. 

 Fiisus (?) siplius Cossmanu Rev. Bibl. Annee, 1895, p. 35. 



Aldric/i' s original description. — Op. cit. 



Cossmann says of this .species that it is a form "a laquelle je 

 ne vois pas d' analogue et qui meriterait peut-etre de former un 

 nouveau sous-genre." 



The curvature of the lines of growth backward just below the 

 suture, it seems to us, is sufficiently distinci to indicate a relation- 

 ship with the Pleurotomids, though the subgenus to which it 

 .should be referred is doubtful. 



Locality. — Ala. : Gregg's landing. 



Type. — Aldrich's collection. 



Specimen figured. — Paleont. Mus., Cornell University. 



Pleurotoma terebrans, var. PI. 2, fiJ,^l!. 



Svn. Cochlespira belfa Con., Am. Jr. Conch., vol. i, p. 210, pl. 2t, li<.j. 6, 



1865. 

 PI. {Cochlespira) cristata Heilp, Proc. Ac. Nat. Sci., Phila, iSSo, p. 



365. 

 Pleurotoma volgeri 'M^yer , Proc. .A.c. Nat. vSci. Phila., 1SH4, p. 107. 

 P. cristata Aid., Geol. Surv. Ala., Bull, i, p. 52, 1S.S6. 

 P. terebrans K\d., idem, p. 55. 



Lamarck first described and named this .species in 1804, (Ann. 

 Mus. vol. 3, p. 266). In his Animaux .sans Vertebres, vol. 7. 

 p. loi, 1822, he described the species as follows: 



"/y. testa /'usi/ormi, stibve7itricosa: striis tra7isversis elegantcr 

 granidatis; anfraflibiis exquisite carinatis: carinis dentatis rotcc- 

 formibus. 



''Pleurotoma terebralis Ann: ibid. No. 20." 



