717 



Pleu. 



V/ii c 



served; obscure spiral band. Alton, 111.; Spergen Hill, etc. 

 SuhcarhonifeTOus. XL 



Pleurotomaria subtilistriata. (Hall. Pal. N. Y. Vol. 1, 

 ifcA ^i^imv k ^ 1847, Trenton). Emmons, Amer. 



Geol. I, ii, 1855, 233, plate 6, ligs. 11, 

 12; 4 or 5 whorls; smooth, or ex- 

 Em AG. ^ 12 pTg tremely finestrige; mouth transverse^ 

 somewhat triangular. Trenton formation. lie. — S. A Miller 

 makes this a synonym of Raphistoma suhtilistriatum. 1889. 



Pleurotomaria subtnrbinata, Meek & Hayden, Proc. A. 

 N. S. Phil. 1858.— X///. 



Pleurotomaria sulcomarginata, Conrad. Jour. Acad. Nat. 



Sci.Phila.Vol. 8,1842, p. 

 272, pi. 16, fig. 13. HalPs 

 15th An. Rt. N. Y. 1862, 

 p. 46, pi. 5, figs. 9, 10- 

 The commonest Plewo- 

 tomaria in the Hamilton 

 Hall. ^^!^^S m^^^'^^WW^P^-^^ formation ; found from 

 Seneca Lake to the Hudson ; often abundant in Madison county 

 shales. West of Seneca lake rarer and with short vertical 

 range. Casts often rounded on the periphery, and some of 

 them in Maryland 1^ inch diameter, with five whorls. — In 

 Pennsylvania, recognized by Claypole in Perry Co., Hamilton 

 Tocks. (F2, preface). Catalogue in 000, specimens;2-24 (two) 

 196-2 (eight).— In Huntingdon Co. Cove station ER. cut near 

 Bedford line, in bottom beds of Hamilton middle shales, (T3. 

 p. 111). — In Monroe Co., Chance's specimen 801-23, from 1^ 

 miles N. of Craig's meadow, Marshall's creek (identified by J 

 Hall, 1888); 807-13, Kintner's farm, 1 m. S. W. of Marshall's 

 falls.— In Pike Co. Fellow's spec. 808-25, Dingman's Falls. All 

 from Hamilton, VIII c. Note. Spec. 872-40 came from the 

 Chemung strata at Nichols, Tioga Co. N. Y. — Ylllg. 



Pleurotom.aria supracingulata, Billings, Geology of 

 U c,^^^^^^' 1^5 Canada, 1863, p. 181, fig. 175, Hudson 



River ( Loraine) formation.^ I III). 



