Athy 



50 



Athyris polita, 



H.79. 



{Atrypa polita.) Hall. 1843. Plate fig. 

 [^^.^ 5.] Chemung forma- 

 tion. Carll's collection's 

 of 1875, ill N. W. Penna. 

 Also from Tioga Co., Pa. 

 O. E. Hairs report in Proc. 

 A. P. 8., Ihlio.— VIllg. 



Athyris spiriferoides. {Atrypa conoentrica^) Hall, page 



198, fig. 79, 5. 

 Eogers, page 

 828, fig. 667. 

 (Rogers' Spir- 

 ifer spirifer- 

 oides.) VIII G. 

 Hamilton for- 

 5. mation. In 

 Pike Co., Pa., found by I. C. White, 4 

 m. above Port Jar vis, in dark sandv 

 Chemung slate, with S. mucronatus 

 etc. (G6, p. 194.) In Monroe Co. 

 Marshall's falls, top rock, with Spirifer., 

 Grammy sia., crinoids, etc., near base of 

 Hamilton, VIII c. (G6, p. 255.) Also m Columbia Co. Hem- 

 lock t., 250' below top of Hamilton strata ; also. South Dan- 

 ville, ?^^/> of Hamilton proper, VIII G\ Selinsgrove, Snyder Co. 

 (I.e. White's Report G7, pp.75, 79, 229, 352, 359.)— In Hun- 

 tingdon Co. Mapleton section, in upper Hamilton shales, (T3, 

 p. 109) ; in hard Hamilton lower sandstone, 700' above Oris- 

 kany, on Shy Beaver, Hopewell t. (p. 163.) ; in middle Ham- 

 ilton, along Murray's run, Oneida t (p. 261). Specimens in 

 00, Pal. Coll. p. 235, spec. 805-7; 805-29; by C. E. Hall, 1875, 

 at Bell's Mills, Blair Co. Pa. from Hamilton shale^ VIII c. 

 Athyris subquadrata. (Hall, Geo. Rt. Iowa, Vol. I, part 

 2, 1858, p. 703, pi. 27, ^^^. 2, Kaskaskia group.) 

 Heilprin's report in An. Rt. Geol. Sur. Penna. 

 1885, page 453, 440, fig. 2. Several more or 

 less perfect casts in the Mus. Wyoming Hist. 

 Soc. Wilkes-Barre, from the Mill Creek lime- 

 stone, 1000' above the Conglomerate (XII) 

 in the Northern Anthracite Coal field ; about 



