52 PEOCEEDINGS OF THE ACADEMY OF [1887. 



Dentiterebra prima n. sp. PI. Ill fig. 2. 



The pointed nucleus consists of four volutions. Five adult 

 whorls are covered by strong transverse ribs, eighteen on the body- 

 whorl ; the surface else being smooth. Base with strong revolving 

 lines, which are jjerceptible on the callus of the inner lip. The 

 inner lip is else without striae or granulations. Crenulations of the 

 outer lip six. Suture distinct, impressed. Claiborne, Ala. 



I found only the figured specimen. It has the appearance of a 

 young Terebra. 



Pleurotoma Aldrichi n. sp. PI. Ill fig. 7, 7a, 7b. 



The nucleus consists of one and a half smooth inflated embryonic 

 whorls. Adult whorls six; they are convex, raised below the 

 suture, covered by transverse ribs and elevated spiral lines. Of the 

 spiral lines those on the middle of the whorl are the strongest. 

 The sinus is above the middle of the whorl. Aperture less than 

 one third of the shell, with rather straight canal. The young shell 

 shows a simple outer lip and a smooth, but not callous inner lip. 

 The older the shell the moi-e deposit on the inner lip it has. Old 

 specimens apparently have strong folds within the outer lip. 



Jackson, 3Iiss. 



I found eight specimens. The specimens, 7 b, has longitudinal 

 folds within the outer lips, the uppermost of which is the strongest ; 

 besides it is somewhat stouter than the others. I consider it, 

 however, as an old specimen of the same species, for the surface, 

 though partially skinned, shows the same ornamentation, the 

 characteristic nucleus is the same, and one of the other specimens 

 shows an indication of the upper fold within the outer lip. 

 Tornatella volutata n. sp. PI. Ill fig. ll. 



Oval-elongate. The nucleus consists of one and a half smooth 

 volutions, the first volution standing almost vertical and being partly 

 hidden. Five adult whorls are slightly convex and covered with 

 impressed revolving lines. These lines are slightly punctuate; 

 number about six on each whorl, the body whorl excepted, where 

 they are numerous and towards the base increase in distinctness and 

 become closer. Mouth rather narrow. Outer lip sharp. Inner lip 

 with a strong fold below the middle, and slightly covered by 

 callus. Suture imjjressed. 



Vicksburg, 3Iiss. "Higher Vicksburgian." 



I found only the figured specimen. The species is considerably 



