1156 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 

 SELENOIDES Owen. See Ischadites Murchison. 



SEMICOSCINIUM Prout. Genotype: S. rhomboideum Prout. 



Semicoscinium Prout, Trans. St. Louis Acad. Sci., 1, 1859, p. 443.- Ulrich, 

 Contr. Amer. Pal., 1, 1886, p. 4. Miller, N. A. Geol. Pal., 1889, p. 322. 

 Ulrich, Geol. Surv. Illinois, 8, 1890, pp. 395, 555. Simpson, 13th Ann. Rep. 

 New York State Geol., for 1893, 1895, p. 705; 47th Ann. Rep. New York State 

 Mus., p. 899. Ulrich, Zittel'sTextb. Pal. (Engl. ed), 1896, p. 281. Simpson, 

 14th Ann. Rep. State Geol. New York for 1894, 1897, p. 509. Nickles and 

 Bassler, Bull. U. S. Geol. Surv., 173, 1900, pp. 38, 400. Grabau, Bull. New 

 York State Mus., 45, 1901, p. 171; Bull. Buffalo Soc. Nat. Sci., 7, 1901, 

 p. 171. Bassler, Bull. U. S. Geol. Surv. 292, 1906, p. 51. Hennig, Archiv. 

 fur Zool., k. Sven. Vat.-Akad. Stockholm, 3, No. 10, 1906, p. 7. Grabau and 

 Shimer, N. A. Index Fossils, 1, 1907, p. 143. Bassler, Zittel- Eastman Textb. 

 Pal., 1913, p. 341. 



Cryptopora Nicholson, Canadian Jour., n. s., 14, 1874, p. 131; Ann. Mag. Nat. 

 Hist., 4th ser., 13, 1874, p. 77; Pal. Province Ontario, 1874, p. 102. Vine, 

 Rep. 51st Meeting British Assoc. Adv. Sci., 1882, p. 169. Hall, Rep. 

 State Geol. New York for 1884, 1885, p. 40. Ulrich, Contr. Amer. Pal., 1, 

 1886, p. 6. 



Carinopora Nicholson, Canadian Jour., n. s., 14, 1874, p. 132; Ann. Mag. Nat. 

 Hist., 4th ser., 13, 1874, p. 81; Pal. Province Ontario, 1874, p. 109. Zittel, 

 Handb. Pal., 1, 1880, p. 602. Vine, Rep. 51st Meeting British Asetoc. Adv. 

 Sci., 1882, p. 169. Hall, Rep. State Geol. New York for 1884, 1885, p. 38. 

 Ulrich, Contr. Amer. Pal., 1, 1886, p. 4. 



Cycloporina Simpson, 13th Ann. Rep. State Geol. New York for 1893, 1895, pp. 

 711, 725; 47th Ann. Rep. New York State Mus., 1895, pp. 905, 919; 14th 

 Ann. Rep. State Geol. New York for 1894, 1897, pp. 504, 520. 



Semicoscinium acmeum (Hall). 



Fenestella acmea Hall, 28th Ann. Rep. New York State Mus., doc. ed., 1876, pi. 12, 

 figs. 10-13, 14 (sp.?); ibid., mus. ed., 1879, p. 124, pi. 12, figs. 10-14; llth 

 Ann. Rep. Indiana Geol. Nat. Hist., 1882, p. 250, pi. 11, figs. 10-14. Cum- 

 ings, Amer. Jour. Sci., 20, 1905, pi. 7, fig. 52. 



Semicoscinium acmea Ulrich, Geol. Surv. Illinois, 8, 1890, p. 355. 



Niagaran (Waldron) : Waldron, Indiana. 



Semicoscinium planum Ulrich and Bassler. 



Semicoscinium planum Ulrich and Bassler, Maryland Geol. Surv., Low. Dev., 



1913, p. 285, pi. 45, fig. 7; pi. 49, fig. 4. 

 Helderbergian (Keyser): Hyndman, Pennsylvania. 

 Holotype.C&t. No. 60743, U.S.N.M. 



Semicoscinium tenuiceps (Hall). 



Fenestella prisca(?) (not of Lonsdale nor of Goldfuss) Hall, Pal. New York, 2, 



1852, p. 50, pi. 19, figs. 4a-m. 



Fenestella tenuiceps Hall, Pal. New York, 2, 1852, p. 165, pi. 40D, figs. 2a-b. 

 Semicoscinium tenuiceps Ulrich, Geol. Surv. Illinois, 8, 1890, p. 355. Grabau, 



Bull. New York State Mus., 45, 1901, p. 171, figs. 71, 72; Bull. Buffalo Soc. 



Nat. Sci., 7, 1901, p. 171, figs. 71, 72. Bassler, Bull. U. S. Geol. Surv., 292, 



1906, p. 52, pi. 19, figs. 6, 7. Grabau and Shimer, N. A. Index Fossils, 1 



1907, p. 143, fig. 200. 



Clinton: Lockport, Rochester, Lewiston, and Niagara Falls, New York; Grimsby, 

 Ontario (Rochester); Osgood, Indiana (Osgood). 



