Pleu. 



720 



Pleurotomaria turbiniformis. Meek & Worthen. Illi- 

 XIII z^^ ^(A \ Ifl 2 ^^^^ Report of 



plate 28, fig. 8, 

 c— Collett's 

 Indiana Re - 



\ni I2i83.. ri 327^"^^^ ''^^ /^. port of isss, 



page 160, plate 32, fig. 7, natural size ; apex a little broken; 

 fig. 8, opposite view of another specimen. Found at LaSalle 

 and Paris, 111., and Vigo county, Ind. Also in S. W. Pennsyl- 

 vania. (J. J. Stevenson, K3, p. 310). Upper coal measures. 

 XV. 



Pleurotomaria ? turgida, Hall . Fal . N. Y. Vol.1 ,1847, page 



ILa. /. .m^ 12, fig. 9, 10, a 



rough cast oi 

 chert in coarse 

 siliceous mass 

 of calciferous 

 sandstone with 

 a mouth like a 

 Watica^ found 

 in Saratoga Co., 

 N. Y., in the 

 Calciferous 



sandstone. II a. In Geol. Penna. 1858, Vol. 2,page817 4-,H. 

 D. Rogers reports it as abundant in one of the Trenton group., 

 (See reference in Report on Blair Co., T, p. 57), viz. Black 

 river limestone. II c. — Now Holopia turgida. (S. A. M.) 



Pleurotomaria umhilicaM. See Trochonema umbilica- 

 tum. Ill, lie, III h. 



Pleurotomaria unisulcata, Conrad, Journal Academy 

 Natural Sciences, Philadelphia, Vol. 8, 1842, page 271, Kin- 

 derhook (suhcarhoniferous) limestone., XI 



Pleurotomaria Valeria, Whiteaves, Pal. Foss. Canada, 

 Vol. 8, pt. 1, 1884, page 23, plate 4, fig. 1, bottom view of type 

 specimen, only a cast; 1 ^, another, which shows spire and 

 shell, surface markings; species easily distinguished by its 

 flatness, subangular whorls, high keeled periphery, and wide 

 open umbilicus. Canada West. Ouelph formation, W. 



i/o/J. /"lata. 3. 



