Disc. 



2i0 



Discina grandis. {Orhioula grandis,) Vanuxem, page 



152, fig 37,4- Hamilton formation. 



VIII G. — In Pennsylvania, collected 



by C. E. Hall,at Marshall's Falls,Mon- 



roe Co., Proc. A. P. S. Jan. 15, 1876.— 



By Claypole in Perry Co. Spec. X-6. — 



By Stevenson in the subcarboniferous 



in the Fayette and Westmoreland Co. 



gaps (KKK, p. 311).— F///-/X 



Discina jervensis. (Barrett. Annals N. Y. Acad. Sciences, 



Vol. 1, No. 4.) In the Oriskany shales near Port Jervis, 



White's Keport on Pike Co., Pa., (G6, p. 123.)— F/Z 



Discina lamellosa. See Discina circe. II c, 



Discina lodensis. ( Orbicula crania. ) Hall, page 223, fig. 



Viil^. 95,1. Vanuxem, page 168, fig. 42,1. Genesee 



formation. — Doubtfully identified by White, 

 as the only fossil seen in the Genesee shales 



H,95-^ ""' at Selinsgrove, Northumberland Co., Pa. 



(G7, p. 76, 78, 359, 361.)— F///^. 



Discina media (Hall, 1863, 16th An. lit.; Pal. N. Y. Vol. 4, 



p. 26, plate 2, fig. 25, 26. Ham. and Ohem.). 

 Claypole's lists of Perry Co., Pa,, F2, p. 

 xiii. A large variety, specimens 5-25, 

 collected at Barnett's mills in Hamilton 

 upper slate; and spec. 87-1, in Columbia 

 Co., Pa., near Bloomsburg, 50' below top of Hamilton (G7, p. 

 75, 76, 230); also at Danville in upper Chemung rocks (G7, p. 

 308); and in Northum. Co. Friedler's sect, bed 21, upper 

 Chemung (G7, p. 367). — VIII c^ g. — In Huntingdon Co. in 

 Marcellus (? Corniferous) limestone at the Hunt. Car Works 

 (T3, p. 115)— 7/// 5 {a .^).— Specimen 804-16-36 (poor), col- 

 lected by Fellows and Genth in 1875, on Marshall's creek, 

 Monroe Co., is labeled from Hamilton strata.^ VIII c. [ ?] 



Discina minuta ( Orbicula rninuta). Hall, page 180, 71, 9. 



Rogers, page 826, fig. 653. — Marcellus, 

 VIII, J.— Claypole, Report F2, Perry Co. 

 Pa. Hamilton specimens 2-11, 20, col- 

 lected at Comp's mill, 2^ m. S. E. of N. 

 Bloomfield (with Chonetes lepidus), — In Marcellus (Cornif. ?) 

 limestone at Cove St., Huntingdon Co. (T3, p. 115). — VIII h^c. 



R i 



vntt 



..« 



TiZ: G53.— -Orbi- 

 cula minuta. 



"n ^ 



