22 Bulletin ii 2,z 



very abundant at Gre^^g's landing, but occurs at other places as 

 indicated below. This is decidedly a lower Lignitic species. 



No one would at first sight regard fig. 14 as belonging to this 

 species. In facft one of ni}' assi.stants had labelled it P. persa, 

 and it certainly does have the appearance of that species. But 

 by closer examination it is seen to have a rather deeper or sharper 

 retral sinus, somewhat inclined to become carinate sub-centrally 

 and costate. Others associated with it have much stronger costa- 

 tions. At Yellow bluff somewhat more ?ias7ita-\\kQ. forms occur; 

 at Tuscahoma still more typical nastita are found while at 

 Gregg's landing the type form occurs in abundance. 



Pleurotoma cainei, n. sp. PI. 2, fig. 16. 



Specific charaflerizatioji. — Size and general form as indicated 

 by the figure; embr5'onic whorls in perfect specimens about four 

 or five in. number, smooth; five post-embryonic whorls of the 

 spire strongly marked b}' deeply incised spiral lines, the first one 

 below the suture slightly stronger than the others causing a 

 slight constri(?l:ion at this place; costae scarcely observable when 

 the spire is pointed towards the light, but when turned side wise 

 the low, rounded, curved ribs are very evident; from the suture 

 they pass upwards and to the right till a point just above the 

 middle of the whorl is reached and there bend rather sharply to 

 the left, becoming less strong and then pass upwards to the 

 suture, forming a slight enlargement at that place; body whorl 

 with humeral region marked by ribs as described above, dying 

 out below, and by strong spiral lines. 



Closely allied to P. vai'iata Edw. and P. koninckii Nyst, from 

 the London clay. Costation somewhat as in hceninghausii Lea. 



Localities. — Ala.: Woods bluff; 3 miles S. W. of Thomasville. 

 Type. — Paleontological Musuem, Cornell Univ. 



Pleurotoma georgei, n. sp., PI. 2, fig. 17. 



Specific chara5leriz at i 0)1 . — Size and general form as indicated by 

 the figure; whorls 7 or 8; i, 2 and sometimes 3 smooth; 3 or 4 

 obliquel}- ribbed longitudinally; 4 to 7 or 5 to 8 with ten or 



