519 Orthis. 



at Eupert (G7, 69) ; abundant 50' to 100' above Stony Creek 

 group (G7, 73) ; in bed 59 of Sect. 78, Catawissa (G7/268); in 

 bed 28 of Sect. 96, on Fiedler's Creek (G7, 367.) See Cat. 

 000, spec. 12182 ; and 12271 near Bloomsburg. — In Hunting- 

 don Co. in Chemung beds 300' beneath the upper (Lackawaxen ) 

 conglomerate at Haun's bridge (T3, 98.) Also spec. 238-2 

 (12852) from mouth of Raystown branch of the Juniata river. 

 —In Perry Co. (000 p. 134) 27-7, oppobite Newport; 34-1, 

 2| miles S. of Millerstown ; 39-8, Middle Ridge, N. of New 

 Bloomfield; 53-13, south of N. B.; 57-35, 36, Junkin farm, S. 

 ofN. B.; 64-4,5; Shermandale; 73-1, Comp's mill, S. E. of 

 N. B. ; 141-1 one mile east of Pinegrove. — 00 Cat. p. 237. 

 Sherwood's Coll. in Charleston, Tioga Co., Pa. Spec. 853-2, 

 854-23 (cast, muscular scars^ hinge line not quite so straight 

 as Hall's figure) ; 854-25 (cast and scars) ; 854-40,41-43 (three 

 casts, with scars); 854-45 (cast, scars). — Coll. in Sullivan, 

 Tioga Co., Pa. Spec. 855-7 (cast, scars) ;-19,-22,-46, -57.— Coll. 

 near Mixtown, Clymer, Tioga. Spec. 856-24 (dorsal valve does 

 not resemble 0, impressa), -24, 25 (ventral valve) ; -28 (dor- 

 sal valve) ; -33 (ventral, flat). — Coll. 1 m. N. of Mansfield, 

 Tioga Co., Pa. 858, -3 and -8 (dorsal) ; -9 (ventral) ; -9 (three 

 dorsal valves) ; -11 (dorsal, cast) ; -13 (dorsal valve, the shell 

 partially preserved); -18 (dorsal).— Coll. from Mansfield, Spec. 

 860-1 a (two dorsal valves) -2 c; -3 (dorsal) ; -4 (two casts 

 ventral) ; -ha (dorsal) ; -14 (ventral, interior cast) ; -22 (ven- 

 tral valve) ; -28(3^ (two dorsal valves); -30 (ventral, cast) ; -32 

 (ditto); -43 (dorsal); 44 (cast ventral); -48 (dorsal); 55 S 

 (dorsal and ventral); -60 «; -61 6^; -67 (cast, three ventral) ; 

 -70 (cast, ventral) ; -71 (dorsal) ; -72 (dorsal) ; -75 (three 

 ventral casts); -79 (cast, ventral) -83 (ventral). — Coll. in 

 Sullivan t., Tioga, Pa. Spec. 861-13 (dorsal) ; -15 (cast, in- 

 terior, ventral) ; -18 (ditto) ; -22 (dorsal) ; -27 (two dorsal 

 valves.) — Note. All the foregoirig are from ShevwoocPs Che- 

 mung Upper ( White's Chemung- Catskill) beds, VIII-IX, — 

 Coll. from Perry Co., Pa. Pole Cat valley, bottom bench of 

 Hamilton fossil ore led (top of Ham. SS.) Spec. 865-1 (ven- 

 tral valve.) F///c.— 867-3 (dorsal) from near Newport, Perry 

 Co. (00, p. 237) fossiliferous limestone in the Chemung^ VIII 

 g, — Note, a large number of the above were determined by 

 Prof. Jas. Hall, verifying M. Simpson's determinations, Nov., 



