Orthis. 



536 



sal ; 2 6?, inside ventral, showing hinge teeth, etc.; 2 o, magniiied 

 surface ; 2 /*, hinge view ; 2^, magnified hinge margin. Centre 

 Co. Pa. doubtful, (T4, page 427 j, cast in Illh. 



Orthis tenuidens, Hall, Pal. N. Y., Vol. 2, 1852, Clinton 

 formation. Found in Pennsylvania along the outcrop of the 

 fossil ore hed^ McKeesville, Mifflin Co., specimens 501-35; 

 502 1 (a slab with numerous valves), 502-2 (the reverse oi the 

 same slab), 502-26, -28; -36,-38; Bell's Mills, 506-7-8 9. V a. 



Orthis tenuistriata, Hall, Geology of the Fourth District 

 Vif{.i,fl^T^^ of New York, 1843, page 245, fig. 107, 3. Portage 

 ^^^S^^ % formation^ VIII f. This and Spirifera levis 

 j^i|'j^^ are the only two brachiopod shells in the New 

 1/17^^^^^ York formation. (J. H.) 



Othis testudinaria. Emmons, page 394, fig. 105, 3. Em- 



ua. 



mens, page 404, fig. 



£w^/i3 



113, 4. Rogers, page 



818, fig. 601. Il c. 



Trenton formation; 

 ^^ also in Pennsylvania 



III h. Loraine (Hud. 

 I Riv.) form at ion. (Dal- 



raan Vet. Acad. Hand. 



1827.)— Owen, Geol. 

 Wis, etc., 

 1852, pi. 2 



B, figs. 6, 7, 



jij^^ ^,. _^^^^^ ^.-.^^^. ^.-^ jj,^^,_ -~^-- ^ J. -< ..•^r■v^sE«,■ae^ 14, 15^ from 



Ohio. — Found in Pennsylvania in Mifflin Co., Kishicoq. val- 

 ley, 7 m. above Reedsville, opposite D. Campbell's, Spec. 202-1 

 (poor fragments), 202-2 (excellent cast, for illustrating the 

 fossil), 202-4 (poor), all in Trenton lime, lie. — Also at 

 Bellefonte, Centre Co. Spec. 203 b (poor fragments), 203-1 

 (about forty specimens), 203-6 a (fair show, but not fit for 

 drawing; with many hri/ozoa)^ 203-14 (pretty fair), 203-27 (fair 

 for drawing), 203-28 A (dorsal valve, suggestive), 203-30 A 

 (a fairly good dorsal valve) 203-31, 203-36 B (small fragments), 

 203-38 (small and poor),2C3-40 (many, poor), 203-41 (interiors, 

 fragmentary, with hryozoa),, 203-43, 203 46. — Also in Mif- 

 flin Co. near Reedsville, Spec. 204-12 (dorsal valve) 204 15; — 



