NicKLESANDBASSLER.] CATALOGUE OF GENERA AND SPECIES. 237 



ERIDOTRYPA Ulrich. Gonotypo: Eridotrypa nmtabilis Ulrich. 

 . 1890. Batostomella (in part). Ulrich, Geol. Surv. Illinois, VIII, pp. 375, 432. 

 1898. Eridotrypa. Ulrich, Geol. Minnesota, III, p. 2(54. 



Eridotrypa appressa (Ulrich). 



1890. Munotrypella appressa. Ulrich, Geol. Surv. Illinois, VIII, p. 453, pi. xlvi, 

 1-le (on i)late called Monotrypella simplex in error). 

 Hamilton: Rock Island, Illinois; Davenport, Iowa. 



Eridotrypa briareus (Nicholson). 



1875. Chivtetes briareus. Nicholson, Pal. Ohio, IT, p. 202, pi. xxi, 13-13^. 



1881. Monticulipora (Monotrypa) briareus. Nicholson, Genus Montictdipora, 



p. 198, pi. ii, 5-5c. 



1882. Monotrypella briarea. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, pp. 



248, 2.56. 

 1888. Monticulipora briarea. James and James, Jour. Cincinnati Soc. Nat. Hist., 



X, p. 172. 

 1894. Monticulipora briarea. J. F. James, Jour. Cincinnati Soc. Nat. Hist., XVI, 



p. 191. 

 Trenton: Covington, Kentucky; Maury County, Tennessee. 



Eridotrypa corticosa (Hall). 



1874. Trematopora corticosa. Hall, Twenty-sixth Ann. Rep. New York State 



Mus., p. 105. 

 1879. Chaitetes corticosus. Hall, Thirty-second Ann. Rep. New York State Mus., 



p. 149 (reprint, 1880, p. 11). 



1883. Trematopora (Chsetetes) corticosa. Hall, Rep. State Geologist New York 



for the year 1882, pi. x, 1-10, pi. xiii, 4. 

 1887. Trematopora? (Trematella ?) corticosa. Hall and Simpson, Pal. New 



York, VI, p. 15, pi. X, 1-10, pi. xiii, 4, pi. xxiii, 20. 

 1893. Eridotrypa corticosa. Ulrich, Geol. Minnesota, III, p. 265. 

 Lower Helderberg: Clarksville, New York. 



Eridotrypa echinata (Hall). 



1876. Treniat(ii)ora echinata. Hall, Twenty-eighth Ann. Rep. New York State 



Mus. (documentary edition), pi. xi, 1-5; ibid. (Museum edition, 1879), 



p. 112, pi. xi, 1-5. 

 1882. Trematopora echinata. Hall, Eleventh Ann. Rep. Indiana Geol. Nat. 



Hist.,p.233,pl. X, 1-5. 

 1893. Eridotrypa echinata. Ulrich, Geol. Minnesota, III, p. 265. 

 Niagara: Waldron, Indiana. 



Eridotrypa exigiia Ulrich. 



1893. Eridotrypa exigua. Ulrich, Geol. Minnesota, III, p. 266, pi. xxvi, 17-19. 

 Trenton: Cannon Falls, Minnesota. 



Eridotrypa mutabilis Ulrich. 



1893. Eridotrypa mutabilis. Ulrich, Geol. Minnesota, III, p. 265, pi. xxvi, 20-32. 

 Trenton: Goodhue, Ramsey, and Dakota counties, Minnesota; Decorah, 

 Iowa; Neenah and Oshkosh, Wisconsin; central and northern Kentucky; 

 Nashville and other localities in Tennessee; Ottawa, Canada. 



Eridotrypa mutabilis-minor Ulrich. 



1893. Eridotrypa nnitabilis var. minor. Ulrich, Geol. Minnesota, III, p. 266, 

 pi. xxvi, 20, 21, 29, 30. 

 Trenton: Cannon Falls and St. Paul, Minnesota. 



