213 



Eato. 



Eatonia medialis, eminens^ singularis and peculiaris ; in 



vi, yii. 



Hall. III. 



ternal structure 

 and shell markings 

 contrasted by Hall, 

 Pall., N. Y., Vol. 

 3,1857, page 435, 

 wood cut, figs. 1, 2, 

 3, 4, 5, 6. For ex- 

 ternal of shells see 

 figs, under the re- 

 spective names in 

 preceding pages. 

 {Atrypa nie- 

 dialis^ Van- 

 uxem, 1842,p. 

 120, fig. 26, 4. 

 L, H. VL See 

 Appendix. 



Eatonia peculiaris. {Atrypa peculiaris.) Hall, page 148, 



fig. 59, 3. Vanuxem, page 123, fig. 28, 3. Rogers, page 825^ 

 fig. 610. (Conrad, An. Rep. N. Y. 141.) Rogers reports it from 

 VI in the Aughwick valley; but C. E. Hall collected it from 

 Oriskany, VII, at Orbisonia and Three Springs; and White 

 atMapleton (T, 35 ; T3, 119.)— Stevenson in Bradford Co. (T2, 

 132; Claypole^s spec. 200 8.)— and White, at Carpenter's Point 

 (G6, 123.)— F//. 

 Eatonia singularis. {Atrypa singularis.) Vanuxem, page 

 120, fig. 26, 3. Lower Helderberg formation.— F/. 

 Dr. Barrett collected it from Stormville limestone 

 (White's Pike Go. Rt., G6, 134.)— Claypole in 

 Perry Co., from Chert beds in Lower Held. (Specs. 

 216—6, 7, three.)— Stevenson in Bedford Co., at 

 Hyndman, bed 38, 104' to 168' below top of Oris- 

 ^53 kany, VII, on Will's cr. numerous (T2, 104) ; and 



