61 



Atry. 



lection, (000.) One specimen {Atrypa prisca) of it, well 

 preserved, got at 1200' beneath the surface, in boring the Co- 

 burn well at Fredonia, was given to Mr. Carll, (Rt. Ill, p. 153). 



Atrypa rostrata. See Meristella rostrata. VIII c. 



Atrypa rugosa. See Rhynchonella rugosa. F5. 



Atrypa scitula. See Meristella scitula. VIII a. 



Atrypa singularis. See Eatonia singularis. VI. 



Atrypa sordida. See Rhynchonella sordida. II c. 



Atrypa spinosa. See Atrypa aspera, and Terebratula 

 aspera of Schlotheim. VIII c. (Claypole, F2, preface ) 



Atrypa suUrigonalis. See Rhynchonella subtrig. II c. 



Atrypa sulcata. See Merista sulcata. VI 



Atrypa tenuilineata. Hall, 1843, page 271, fig. 124, 4. 

 Vni-^^^ VIII g. Chemung formation. Nearly circular, 

 f.j^^^beak small, surface marked by numerous very fine 

 ^^^ radii ; possibly an Orthis^ Hall. 



Atrypa trihulis. See Atrypa reticularis. VIII g. 



Atrypa unguiformis. See Orthis hipparionyx. VII 



Atrypa unguiculus. See Ambocoelia umbonata. VIII g. 



Atrypa ? at the Clinton ore crop, Howard furnace, 



Centre Co., A. L. Swing's report, in T4, p. 429. V a. 



Atrypa ? Hall. Plate fig. 14, page 2. F5.— It belongs 



V.b. to the group of coarsely ribbed Atrypas {rugosa, 

 nodostriata, camura., negleota., cfec.,) figured in Pal. N. 

 Y., Vol. 2, 1851, pi. 56, 57. 

 p4] % 



Atrypa — 



V.C 



? Hall, page 137, fig. 54-6. . V c. Salina form- 

 ation, a fine salt mud, the free acid in which has 

 destroyed its fossils, leaving only obscure casts. 



— ? Rogers, page 825, fig. 641. F/ Lower Held- 

 erberg. This is a common fossil shell in 

 H. D. Rogers' Premeridian (Lewistown) 

 limestone, and in the sandy shales be- 

 tween its top and the bottom of the Meri- 

 dian (Oriskany) sandstone. It is of the 

 size and general shape of OrtJiis musculosa 

 as figured in Hall's Pal. N. Y., 1861, vol. 3, 



641 pi 9^^ gg- 4. VII 



