Pleu. 



704 



PleurorJiynGkus. See Conocardium. VIII a. 



Pleurotomaria americana, Billings. Geology of Canada, 

 lie. ^^m^^^^^E 1863, page 184, fig. 180, section 

 G-QciL^^^K^^^^^^^^ through the middle of the whorls. 



Trenton limestone, II c. 



leurotomaria arata, Hall. 15th Annual Report, 1862, p. 



V// t, '^MMJ77?>^ y^v *^' ^^^ P^- ^' ^ss. 13, 



14. Casts of the 



interior abundant 

 in the Scoharie 

 grit^ eastern New 

 York, but speci- 

 mens retaining the 

 shell rare; stronger 

 markings often 

 preserved on the 



ttjinfv r ently distinctly 



umbilicate. VII h, — In Pennsylvania, found in Pike Co., at 

 Dingman's Falls. Specimen 808-14 (one whorl only) withPA^^ 

 adella parallela. — Hamilton ? VIII c ? 



leurotomaria beekmanensis, Whitfield. Amer. Mu- 

 seum of Nat. His. 

 "'^ ^^ ^ '' '' N. Y. Bull., Vol. 2, 



No. 2, page 53, 

 plate 8, figs. 8, 9, 



, -,^.-... , -<^&^ ...*^^- 10, three nearly 



H//.///W.^.^...:/»./>.: -"^ ^^^^.^^ individuals ; 



fig. 11, side view of a broader specimen. Of the type of P. 

 etna^ and P, ramsayi^ Bill. From compact limestone at Beek- 

 mantown, N. Y., in Caloiferous formation. II a. 



Pleurotomaria bilix (now Cyelonema bilix) Conr. Jour. 



Hall. Fal.N.y. Vol.1, im. 



Pj/-fl/'ll.>.MW. 



