r8 Bulletin i i i8 



three whorls; sinus slightly above the middle; bod}' whorl tumid, 

 spirally striate below; labial collosity prominent. 



In external markings this species resembles P. tombigbeensis, 

 but in the latter the retral sinus is located higher up on each 

 whorl and is more sharply curved. 



Locality.— hxK.: Gregg's landing. 



Type. — Paleontological Museum, Cornell University. 



Pleurotoma exilloides, PI. 2, fig. 8. 



Syn. P. exilloides Aid., Bull, i, Geol. Surv. Ala., 1886, p. 30, pi. 3, fig. 9. 



AldricJi' s original descriptiofi.—-' 'Sh.Q\\ slender; spire high; 

 whorls ten, rounded, slight^ shouldered below the suture; a 

 rather strong impressed line just below, the fainter ones still 

 lower. 



"The first four or five whorls of the apex .smooth, the others 

 transversely striate, striations ver}^ closely set on the body whorl. 

 Slit nearly semicircular; outer lip gently curved; columella bent; 

 canal short, curved to the right. 



Locality. — Lower bed, Woods Bluff, Ala. 



' 'This species is close to P. perexilis, * * but differs in the 

 breadth of the body whorl, and the slight shouldering of the 

 same. The slit is larger and revolving lines much fainter. ' ' 



Type and specimen figured. — Aldrich's colledlion. 



Pleurotoma capax, PI. 2, fig. 9. 



Syn. P. ra/>a^ Whitf., Amer. Jr. Conch., vol. i, 1865, p. 261, pi. 27, 

 %• 3- 

 P. capax Aid., Geol. Surv. Ala., Bull i, p. 55, 1S86. 



Whitfield'' s original descriptio7i.— -"Shell small, broadly- fusi- 

 form; volutions five, strongly concave on the upper side, and 

 ventricose below; ornamented on the periphery of the upper volu- 

 tions with a line of nodes, which gradualh' decrea.se in size, and 

 finally become obsolete on the body whorl; columella strong, 

 slightly twisted in the lower part; aperture wide, and with the 

 canal, forming more than one-half the entire length of the shell; 

 surface marked by very fine, tortuous, revolving lines, very 

 faint on the concave part of the volutions, crossed by fine lines of 

 growth, having a .slight curve in the upper part. 



