NicKLES AND BAssLER.] CATALOGUE OF GENERA AND SPECIES. 403 



Semicoscinium permarginatum (Hall). 



1883. Fenestella periuarginata. Hall, Trans. Albany Institute, X, p. 172 (ab- 

 stract, 1881, p. 30) . 

 1887. Fenestella permarojinata. Mall and Simpson, Pal. New York, VI, p. 127, 

 pi. xlix, 1-10. 

 Hamilton: Falls of the Ohio. 



Semicoscinium planodorsatum LUrich. 



1890. Semicoscinium planodorsatum. Ulrich, Geol. Surv. Illinois, VIII, ]>. rtrin, 

 pi. xliv, l)-3/>. 

 Hamilton: Falls of the Ohio. 



Semicoscinium rhombicum Ulrich. 



1890. Semicoscinium rhombicum. Ulrich, Geol. Surv. Illinois, VIII, p. 556, 

 pi. xliv, 4, 4(1, pi. liv, 8. 

 Hamilton: Buffalo, Iowa. 



Semicoscinium rhomboideum Prout. 



1859. Semicoscinium rhomboideum. Prout, Trans. St. Louis Acad. Sci., I, 



p. 443, pi. xvii, 1-1/. 

 1897. Semicoscinium rhomboideum. Simpson, Fourteenth Ann. Rep. State 

 Geologist New York for the year 1894, fig. 58 (p. 509). 

 Hamilton: Falls of the Ohio. 



Semicoscinium semirotundum (Hall). 



1883. Fenestella semirotunda. Hall, Trans. Albany Institute, X, p. 174 (ab- 



stract, 1881, p. 32) . 



1887. Fenestella semirotunda. Hall and Simpson, Pal. New York, VI, p. 125, 

 pi. xlix, 11-22. 



1897. Cycloporina semirotunda. Simpson, Fourteenth Ann. Rep. State Geolo- 

 gist New York fo:- the year 1894, pi. iii, 3, 4. 



1895. Cycloporina rhomboidea. Simpson, Thirteenth Ann. Rep. State Geologist 

 New York for the year 1893, p. 711; Forty-seventh Ann. Rep. New York 

 State Mus., p. 905. 

 Hamilton: Falls of the Ohio. 



Semicoscinium subtortile (Hall). 



1884. Fenestella subtortilis. Hall, Thirty-sixth Ann. Rep. New York State Mus., 



p. 71. 

 1887. Fenestella subtortilis. Hall, Sixth Ann. Rep. State Geologist New York 



for the year 1886, p. 52. 

 1888: Fenestella subtortilis. Hall, Seventh Ann. Rep. State Geologist New York 



for the year 1887, pi. ix, 1-5. 

 Hamilton: Moscow, New York. 



Semicoscinium tenuiceps (Hall). 



1852. Fenestella prisca (?) (not of Lonsdale nor of Goldfuss). Hall, Pal. New 



York, II, p. 50, pi. xix, 4a-m. 

 1852. Fenestella tenuiceps. Hall, Pal. New York, II, p. 165, pi. xlD, 2a-b. 

 1890. Semicoscinium tenuiceps. Ulrich, Geol. Surv. Illinois, A^III, p. 355w 

 Niagara: Lockport, New York. 



Semicoscinium thyene (Hall). 



1879. Fenestella Thyene. Hall, Thirty-second Ann. Rep. New York State Mus., 



p. 170 (reprint, 1880, p. 32). 

 1883. Fenestella Thyene. Hall, Rep. State Geologist New York for the year 



1882, pi. xxi, 1-5. 



