196 AMEEICAN FOSSIL ERYOZOA. [bull. 173. 



Callotrypa unispina (Hall) — Continued. 



1879. Callopora unispina. Hall, Thirty-second Ann. Rep. New York State Mus., 



p. 153 (reprint, 1880, p. 15). 

 1883. Callopora unispina. Hall, Rep. State Geologist New York for the year 



1882, pi. xi, 35-39, ? 40-41. 

 1887. Callopora (Callotrypa) unispina. Hall and Simpson, Pal. New York, VI, 



p. 26, pi. xi, 35-37. 

 1897. Callotrypa unispina. Simpson, Fourteenth Ann. Rep. New York State 



Geologist for the year 1894, pi. xviii, 8-11. 

 Lower Helderberg: Catskill Creek and Clarksville, New Y''ork. 



Carinopora Nicholson. See Semicosciniuni Prout. 



Carinopora Hindei Nicholson. See Semicoscininm hindei (Nicholson). 



Cavea D'Orbigny. Not a Paleozoic genus. 



Cavea prisca Gabb and Horn. See Streblotrypa prisca (Gabb and 



Horn). 

 CERAMELLA Hall and Simpson. Genotype: Ceramella scidacea Hall 

 and Simpson. 

 1887. Ceramella. Hall and Simpson, Pal. New York, VI, p. xix. 

 1889. Ceramella. Miller, North American Geol. Pal., p. 296. 

 1897. Ceramella. Simpson, Fourteenth Ann. Rep. State Geologist New York for 

 the year 1894, p. 527. 

 Obs. — This genus is probably a synonym of either Glyptopora Ulrich or 

 Phractopora Hall. The figures and description are insufficient to decide, 

 the specimens being apparently young. 



Ceramella scidacea Hall and Simpson. 



1S87. Ceramella scidacea. Hall and Simpson, Pal. New York, VI, p. 420, 



pi. Ixiv, 5-8. 

 1897. Ceramella scidacea. Simpson, Fourteenth Ann. Rep. State Geologist New 



I'ork for the year 1894, pi. xiv, 2-6. 

 Hamilton: Spurgen's Glen, Norton's Landing, Cayuga Lake, and Darien 



Center, New York. 



CERAMOPHYLLA Ulrich. Genotype: Ceramophylla f rondosa Ulrich. 

 1893. Ceramophylla. Ulrich, Geol. Minnesota, III, p. 331. 



Ceramophylla f rondosa Ulrich. 



1893. Ceramophylla frondosa. Ulrich, Geol. Minnesota, III, p. 331, pi. xxviii, 



3-7. 

 1896. Ceramophylla frondosa. Ulrich, Zittel's Textb. Pal. (Engl.ed.), fig. 438 



(p. 268). 

 Trenton (Black River): St. Paul and Goodhue County, Minnesota. 



CERAMOPORA Hall. Genotype: Ceramopora irabricata Hall. 



1852. Ceramopora. Hall, Pal. New York, II, p. 168. 



1860. Ceramopora. Eichwald, Lethtea Rossica, I, p. 412. 



1882. Ceramopora. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, p. 156. 



1887. Ceramopora. Foerste, Bull. Sci. Lab. Denison Univ., II, p. 169. 



1887. Ceramopora. Hall and Simpson, Pal. New York, VI, p. xviii. 



1888. Ceramopora. James and James, Jour. Cincinnati Soc. Nat. Hist., XI, 



p. 36. 



1889. Ceramopora. Miller, North American Geol. Pal., p. 296. 



1890. Ceramopora. Ulrich, Geol. Sur. Illinois, VIII, pp. 380, 462. 

 1896. Ceramopora. Ulrich, Zittel's Textb. Pal. (Engl, ed.), p. 267. 



