234 AMERICAN FOSSIL BRYOZOA. [bull. 173. 



DIPLOTRYPA Nicholson — Continued. 



1882. Diplotrypa. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V., p. 153. 



1883. Diplotrypa. Foord, Contr. Micro-Pal. Cambro-Sil., p. 13. 



1889. Diplotrypa. Miller, North American Geol. Pal., p. 187. 



1890. Diplotrypa. Ulrich, Geol. Surv. Illinois, VIII, pp. 378, 457. 



1893. Diplotrypa. Ulrich, Geol. Minne.sota, III, p. 285. 



1896. Diplotrypa. Ulrich, Zittel's Textb. Pal. (Engl, ed.), p. 275; also (not 



Ulrich) p. 104 (in part). 

 1877. Callopora (not Hall). Dybowski, Die Chjetetiden d. Ostb. Silur-Form., 



p. 106. 



Diplotrypa ? dubia Ulrich. 



1890. Diplotrypa ? dubia. Ulrich, Geol. Surv. Illinois, VIII, p. 459, pi. xxxiii 

 3-36. 



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



XVI, p. 182. 

 Cincinnati (Richmond): Wilmington, Illinois. 



Diplotrypa infida Ulrich. See Mesotrypa infida (Ulrich). 



Diplotrypa limitaris Ulrich. 



1893. Diplotrypa limitaris. Ulrich, Geol. Minnesota, III, p. 286, fig. 18. 

 Trenton: Goodhue County, Minnesota. 



Diplotrypa milleri Ulrich. See Mesotrypa milleri (Ulrich). 



Diplotrypa neglecta Ulrich. 



1893. Diplotrypa neglecta. Ulrich, Geol. Minnesota, III, p. 287, fig. 19. 

 Trenton: Hader, Minnesota. 



Diplotrypa patella Ulrich. See Mesotrypa patella (Ulrich). 

 Diplotrypa Quebecensis Ami. See Mesotrypa quebecensis (Ami). 

 Diplotrypa regularis Foord. See Mesotrypa regularis (Foord). 



Diplotrypa westoni Ulrich. 



1889. Diplotrypa Westoni. Ulrich, Contr. Micro-Pal. Cambro-Sil., Part II, p. 

 30, pi. viii, 4-46. 



1896. Diplotrypa Westoni. Ulrich, Zittel's Textb. Pal. (Engl, ed.), fig. 457 (p. 



274). 



1897. Diplotrypa Westoni. Whiteaves, Pal. Foss., Ill, part III, p. 163. 

 Trenton: Big Island, Lake Winnipeg, Manitoba. 



DISCOTRYPA Ulrich. Genotype: Chtetetes elegans Ulrich. 



1882. Discotrypa. Ulrich, Jour. Cincinnati Soc. Nat. Hi.st., V, p. 155. 



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



1890. Discotrypa. Ulrich, Geol. Surv. Illinois, VIII, p. 378. 



Discotrypa ? devonica Ulrich. 



1886. Discotrypa devonica. Ulrich, Contr. American Pal., I, p. 25, pi. ii, 8, 8«.. 

 Hamilton: Falls of the Ohio. 



Discotrypa elegans (Ulrich). 



1879. Cheetetes elegans. Ulrich, Jour. Cincinnati Soc. Nat. Hist., II, p. 130, pi. 

 xii, 12, 12a. 



1883. Discotrypa elegans. Ulrich, Jour. Cincinnati Soc. Nat. Hist., VI, p. 163, 



pi. vii, 1-16. 

 1888. Monticulipora elegans. James and James, Jour. Cincinnati Soc. Nat. 

 Hist., X, p. 165. 



