71 LiGNiTic Stage 71 



bluff, since silicions pebbles fully 5^ inch in diameter are not un- 

 common, showing that land and inflowing streams were not far 

 awa\' when these beds were being laid down. 



Me!ania trigemmata, PL 9, fig. 3, a, b. 



S}-)!. Turbonilla {Chevinitzia) Irigfinniata Con., Jour. Acad. Nat. Sci. 

 Phila., vol. 4, p. 288, pi. 47, fig. 33. 

 7". (C) Irigcininata Aid., Geol. Surv. Ala., Bull, i, p. 52, 1886. 

 Scalaria? trigeiiniiata de Greg., Mon. Faun. Eoc, etc., p. 131, 



1890. 

 Rissoia f trigeiiiiiiata Con., Annal. Geol. et Pal., 1893, p. 27. 



Conrad' s original description . — ' ' Turrited ; whorls seven convex ; 

 ribs distant, with three subequal tubercles; the ribs become obso- 

 lete towards the suture, where there are two revolving lines, min- 

 utel}' beaded in a line with the ribs; suture profound, an im- 

 pres-sed line revolving immediately above; base with six revolv- 

 ing carinated lines. Length r yi^ inches. 



"Accompanying the above are specimens of univalves em- 

 bracing the following Eocene species: Mitra paBclis Q.., Cancel- 

 laria gemniata G., C. alvaata C, Calyptraphorns trinodifcnis C. 

 All except the last are Claiborne species." 



Probably related X.o ' ' Terebra' ' plicifera Heilp. Some .speci- 

 mens have a close resemblance to Melania pnvcessa De.sh. 



Locality. — Ala. : Woods bluff. 



Specimen figured. — Paleontological Museimi, Cornell Univer- 

 sity. 



Potamides fulvarupis, n. sp. PI. 9, fig. 4- 



Specific charaflerization. — Form and size as indicated by the 

 figure; whorls increasing rapidly in size and giving the shell a 

 ventricose appearance; upper whorls with traces of costations 

 from suture to suture, but only evident near the upper part of 

 the whorl, where there is a broad, low or vertically compressed 

 nodule on what would be the upper portion of each rib. Just 

 above and below this row of nodules there is a well marked de- 

 pression or depressed broad line. Traces of two low, broad 

 .spirals are on the whorls below the crenules; on the body whorl 

 there are also four strong ba.sal .spirals. Lines of growth are not 



