92 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Atrypa mansoiiii (Salter). 



Rhynchonella mansonii Salter, Sutherland's Jour. Voyage Baffins Bay, etc., 2, 



1852, p. ccxxi, pi. 5, fig. 5. Etheridge, Quart. Jour. Geol. Soc. London, 34, 



1878, p. 596. 



Atrypa masonii Schuchert, Bull. U. S. Geol. Surv., 87, 1897, p. 153. 

 Niagaran: Near Wellington Channel, Bessels Bay, Arctic America. 



Atrypa marginalis (Dalman). 



Terebratula marginalis Dalman, Kongl. Svenska Vet.-Akad. Handl. for 1827, 

 1828, p. 59, pi. 6, fig. 6. 



Atrypa marginalis Roemer, Sil. Fauna west. Tennessee, 1860, p. 69, pi. 5, fig. 10. 

 Billings, Cat. Sil. Foss. Anticosti, 1866, p. 46. Hall and Whitfield, 24th 

 Rep. New York State Cab. Nat. Hist., 1872, p. 197. Davidson, Geol. Mag., 

 dec. 2, 8, 1881, p. 10, fig. 9; Mon. Brit. Foss. Brachiopoda, 5, Sil. Suppl., 

 Pal. Soc., 1882, p. 122. Foerste, Proc. Boston Soc. Nat. Hist., 24, 1890, p. 

 314, pi. 6, figs. 8, 9; Geol. Ohio, 7, 1895, p. 591, pi. 25, figs. 6, 9; pi. 31, figs. 

 8, 9. Hall and Clarke, Pal. New York, 8, pt. 2, 1895, pi. 55, figs. 24, 25. 

 Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 309. 



Trematospira rnatthewsoni McChesney, Descriptions New Pal. Fos'., 1860, p. 

 71; Trans. Chicago Acad. Sci., 1, 1868, p. 32, pi. 7, fig. 3. 



Atrypa nodostriata Foerste (not Hall), Bull. Denison Univ., 1, 1885, p. 90, pi. 

 13, fig. 9. 



Atrypa marginalis var. multistriata Foerste, Proc. Boston Soc. Nat. Hist., 24, 

 1890, p. 316, pi. 6, fig. 8. 



Silurian: Europe; Anticosti, etc., Canada; New York, Pennsylvania, Ohio, etc. 

 (Brassfield-Niagaran) . 



ATRYPA MARGINALIS var. MULTISTRIATA Foerste. See Atrypa marginalis. 



ATRYPA MODESTA Hall. See Zygospira modesta. 



ATRYPA NAVIFORMIS Hall. See Whitfieldella(?) naviformis. 



ATRYPA NEGLECTA Hall. See Camarotcechia (Stegerhynchus) neglecta. 



ATRYPA NITIDA Hall. See Whitfieldella nitida. 



ATRYPA NITIDA var. OBLATA Hall. See Whitfieldella oblata. 



ATRYPA NODOSTRIATA Foerste. See Atrypa marginalis. 



Atrypa nodostriata Hall. 



Atrypa imbricata Hall (not Sowerby), Geol. New York, Rep. 4th Dist., 1843, 

 Tab. Org. Rem., 13, fig. 1. 



Atrypa nodostriata Hall, Pal. New York, 2, 1852, p. 272, pi. 56, fig. 2. Hall and 

 Whitfield, Pal. Ohio, 2, 1875, p. 133, pi. 7, figs. 12-14. Safford, Geol. Ten- 

 nessee, 1869, p. 315, text fig. 5. Grabau, Bull. Buffalo Soc. Nat. Sci., 7, 

 1901, p. 196, fig. 114; Bull. New York State Mus., 45, 1901, p. 196, fig. 113. 

 Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 309, fig. 387. 



Niagaran: Lockport, etc., New York (Rochester); Ontario; Ohio; Kentucky; 

 Wisconsin; Tennessee. 



ATRYPA NUCLEOLATA Hall. See Whitfieldella(?) nucleolata. 



ATRYPA NUCLEUS Hall. See Triplecia nucleus. 



ATRYPA OBTUSIPLICATA Hall. See Camarotcechia obtusiplicata. 



Atrypa orbicularis Owen. 



Atrypa orbicularis Owen, Geol. Expl. Iowa, Wisconsin, Illinois, 2d ed., 1844, p. 

 80, pi. 15, fig. 9. 



