226 AMERICAN FOSSIL BRYOZOA. [bull. 173 



Cystodictya sulcata (Winchell). 



1866. Stictopora sulcata. Winchell, Rep. Lower Penin. Michigan, p. 92. 

 1890. Cystodictya sulcata. Ulrich, Geol. Surv. Illinois, VIII, p. 492. 



Hamilton : Petoskey, Michigan. 



Obs. Compare Cystodictya meeki (Nicholson) with this species. 



Cystodictya trilineata (Hall and Simpson). 



1887. Stictopora trilineata. Hall and Simpson, Pal. New York, Yl, ji. 243, pi. 



Ixi, 26, 27. 

 1890. Cystodictya trilineata. Ulrich, Geol. Surv. Illinois, YIII, p. 492. 

 Hamilton: Moscow and near Canandaigua Lake, New York. 



Cystodictya tumulosa (Hall and Simpson). 



1887. Stictopora tumulosa. Hall and Simpson, Pal. New York, VI, p. 246, pi. 

 Ixi, 18-22. 



1890. Cystodictya tumulosa. Ulrich, Geol. Surv. Illinois, VIII, p. 492. 



1891. Stictopora tumulosa. Hall, Tenth Ann. Rep. State Geologist New York 



for the year 1890, p. 41; Forty -fourth Ann. Rep. New York State Mus., 

 p. 71. 

 Hamilton: Moscow, and south of Le Roy, New York. 



Cystodictya vermicula (Hall). 



1886. Stictopora vermicula. Hall, Fifth Ann. Rep. State Geologist New York 



for the year 1885, pi. xxvii, 2^. 



1887. Stictopora vermicula. Hall and Simpson, Pal. New York, VI, p. 93, pi. 



xxvii, 2-4. 

 1890. Cystodictya vermicula. Ulrich, Geol. Surv. Illinois, Ylll, p. 492. 

 Hamilton: Falls of the Ohio. 



Cystodictya zigzag Ulrich. 



1888. Cystodictya zigzag. Ulrich, Bull. Denison Univ., IV., \k 81, pi. xiii, 11, 11a. 

 Keokuk: Keokuk, Iowa. 



Waverly (Cuyahoga shale) : Richfield, Ohio. 



CYSTOPORA Hall. Genotj-pe: Cystopora ^eniculata Hall. 



1883. Cvstopora. Hall, Trans. Albany Institute, X, p. 161 (abstract, 1881, 



p. 19). 



1887. Cystopora. Hall and Simj^son, Pal. New York, VI, p. xxv. 



1889. Cystopora. Miller, North American Geol. Pal., p. 300. 



1897. Cystopora. Simpson, Fourteenth Ann. Rep. State Geologist New York 

 for the year 1894, p. 598. 



Cystopora geniculata Hall. 



1883. Cystopora geniculata. Hall, Trans. Albany Institute, X, p. 161 (abstract, 



1881, p. 20) . 

 1887. Cystopora geniculata. Hall and Simpson, Pal. New York, VI, p. 103, pi. 



Ixvi, 7-10. 

 1897. Cystopora geniculata. Simpson, Fourteenth Ann. Rep. State Geologist 



New York for the year 1894, pl. xxv, 3-5. 

 Hamilton: Falls of the Ohio. 



DEKAYELLA Ulrich. Genotype: Dekayella obscura Ulrich. 



1882. Dekayella. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, p. 155; ibid., VI, 

 1883, p. 90. 



1889. Dekayella. Miller, North American Geol. Pal., p. 184. 



1890. Dekayella. Ulrich, Geol. Surv. Illinois, VIII, p. 372. 

 1893. Dekayella. Ulrich, Geol. Minnesota, III, p. 269. 



1896. Dekayella. Ulrich, Zittel's Textb. Pal. (Engl, ed.), p. 273. 



