715 



Pleu. 



Pleurotomaria rotuloides. (Hall, Pal. N. Y., 1847, Black 



River and Trenton limestones.) Em- 



J .^^ ff, mons, Amer. Geol. Vol. 1, pi. 2, 1855, p- 



161, plate 6, fig. 10; about 4 whorls, 



outer one concave below ; margin an- 



JO ^^S^^^S S^l^^ 5 umbilicus small ; striated. Re- 



_ ,^, „„, Rftmhles PJ.p.nf/Jn^/Jyf/r^'.s. Trenton, II G. 



Em.A.G.fg55 ^IWMHP^B, 



Pleurotomaria rotunda {Enomphalus rotundus)^ Hall, 



Villa.. nm^ Greol. Fourth District, N. Y., 1843, page 



172, fig. 68, 4. Corniferous formation- 

 Villa, 



Pleurotomaria solaroides. Hall, Geol. Canada, 1863, page 



yaf 



^ ' GeoLC anccdcL 



