804 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Mesotrypa orbiculata Cumings and Galloway. 



Mesotrypa orbiculata Cumings and Galloway, 37th Ann. Rep. Dep. Geol. Nat. 



Res. Indiana, 1913, p. 80, pi. 14, figs. 1-lb. 

 Richmond (Arnheim): Big Four Railroad, near Harmon's Station, Indiana. 



Mesotrypa patella (Ulrich). 



Diplotrypa patella Ulrich, Geol. Surv. Illinois, 8, 1890, p. 458, pi. 33, figs. 2-2c. 



J. F. James, Jour. Cincinnati Soc. Nat. Hist., 16, 1894, p. 184. 

 Mesotrypa patella Ulrich, Geol. Minnesota, 3, 1893, p. 257. 

 Dianulites patella Miller, N. A. Geol. Pal., 2d App., 1897, p. 728 (gen. ref.). 

 Richmond (Whitewater): Oxford, Ohio; Richmond, Indiana. 

 Holotype.C-dt. No. 43306, U.S.N.M. 



Mesotrypa quebecensis (Ami). 



Diploti-ypa Quebecensis Ami, Canadian Rec. Sci., 5, 1892, p. 101. 



Mesotrypa quebecensis Ulrich, Geol. Minnesota, 3, 1893, p. 259, figs. 15, c, f. 



Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 130, fig. 186f. Bassler, 



Bull. Virginia Geol. Surv., 2a, 1909, pi. 24, figs. 3, 4. 



Dianulites quebecensis Miller, N. A. Geol. Pal., 2d App., 1897, p. 728 (gen. ref.). 

 Trenton: Quebec, etc., Quebec; Bridport, Vermont; Trenton Falls and Little 



Falls, New York; Frankfort, Burgin, and Danville, Kentucky (Hermitage); 



Decorah, Iowa (Prosser). 

 Plesiotype.Ca,t. No. 43540, U.S.N.M. 



Mesotrypa regularis (Foord). 



Diplotrypa regularis Foord, Contr. Micro-Pal. Cambro-Sil., 1883, p. 13, pi. 1, 



figs. 3-3c. 



Mesotrypa regularis Ulrich, Geol. Minnesota, 3, 1893, p. 257. 

 Trenton: Ottawa, Ontario. 



Mesotrypa? rotunda Ulrich. 



Mesotrypa? rotunda Ulrich, Geol. Minnesota, 3, 1893, p. 262, fig. 17. 

 Dianulites rotunda Miller, N. A. Geol. Pal., 2d App., 1897, p. 728 (gen. ref.). 

 Trenton (Prosser): Hader, Minnesota. 

 Holotype.C&t. No. 43545, U.S.N.M. 



Mesotrypa selkirkensis Whiteaves. 



Mesotrypa selkirkensis Whiteaves, Pal. Foss., 3, 1897, p. 162, pi. 19, figs. 1, la. 

 Dianulites selkirkensis Miller, N. A. Geol. Pal., 2d App., 1897, p. 728 (gen. ref.). 

 ' .Black River or Richmond: East Selkirk, Manitoba. 



Mesotrypa? spinosa Ulrich. 



Mesotrypa? spinosa Ulrich, Geol. Minnesota, 3, 1893, p. 259, pi. 17, figs. 9-12. 

 Black River (Decorah): Minneapolis and St. Paul, Minnesota. 

 Cotypes.C&t. No. 43546, U.S.N.M. 



Mesotrypa whiteavesi (Nicholson). 



Chaetetes petropolitanus (part) Nicholson, Quar. Jour. Geol. Soc. London, 30, 



1875, p. 510, pi. 30, figs. 5, 5c; Pal. Ohio, 2, 1875, p. 204, pi. 21, figs. 14-14b; 

 Geol. Mag., n. s., 2, 1875, p. 175; Ann. Mag. Nat. Hist., 4th ser., 18, 1876, 

 p. 88, pi. 5, figs. 6a (not 6). 



Monticulipora (Diplotrypa) whiteavesii Nicholson, Paleozoic Tabulate Corals, 



1876, p. 316, pi. 13, figs. 4-4\> (not pi. 14, 1); Genus Monticulipora, 1881, p. 

 160, fig. 31. 



Monticulipora whiteavesii James and James, Jour. Cincinnati Soc. Nat. Hist., 10, 

 1888, p. 169; J. F. James, ibid., 16, 1894, p. 187. 



