NicKLKs AND BAssLER.] CATALOGUE OF GENERA AND SPECIES. 339 



Pachydictya emaciata Foerste. 



1887. Pachydictya emaciata. Foerste, Bull. Sci. La}). Di-iiisoii Univ., II, p. 62; 

 il)id.,III, 1888,pl. xv,8. 



1895. Pachydictya emaciata. Foerste Geol. Sur. Ohio, VII, p. 5^9, pi. xxviii, 8. 

 Clinton: Dayton, Ohio. 



Pachydictya emarcescens Foerste. See Ptilodict^^a expansa-emarces- 

 cens (Foerste). 



Pachydictya everetti Ulrich. 



1890. Pachydictya everetti. Ulrich, Geol. Sur. Illinois, VIII, j). 523, pi. xxxiii, 



i-if- 



Trenton (Stones River): Dixon, Illinois. 

 Pachydictya? famelica (Foerste). 



1889. Ptilodictya famelicus. Foerste, Proc. Boston Soc. Nat. Hist. , XXIV, p. 329, 



pi. vi, 32. 

 Clinton: Eaton and Belfast, Ohio. 



Pachydictya farctus Foerste. See Pach^^dictya crassa (Hull). 



Pachydictya fenestelliformis (Nicholson). 



1875. Ptilodictya fenestelliformis. Nicholson, Ann. Mag. Nat. Hist., ser. 4, XV, 



p. 181, pi. xiv, 5-56. 

 1875. Ptilodictya fenestelliformis. Nicholson, Pal. Ohio, II, p. 263, pi. xxv, 8-86. 

 1875. Ptilodictya fenestelliformis. Nicholson, Pal. Province Ontario, p. 14. 

 1882. Phaenopora ? fenestelliformis. Ulrich, Jour. Cincinnati Soc. Nat. Hist. , V, 



pi. viii, 8. 



1890. Pachydictya fenestelliformis. Ulrich, Geol. Sur. Illinois, VIII, p. 256. 

 Cincinnati (Richmond): Blanchester and other locaUties in Ohio; Wil- 

 mington, Illinios; ? Peterborough, Canada (Nicholson). 



Pachydictya fenestelliformis-corticula Ulrich. 



1890. Pachydictya fenestelliformis var. corticula. Ulrich, Geol. Sur. Illinois, 

 VIII, p."526, pi. xxxi, 1. 

 Cincinnati (Richmond): Wilmington, Illinois. 



Pachydictya fimbriata Ulrich. 



1886. Pachydictya fimbriata. Ulrich, Fourteenth Ann. Rep. Geol. Nat. Hist. Sur. 



Minnesota, p. 75. 

 1893. Pachydictya fimbriata. Ulrich, Geol. Minnesota, III, p. 152, pi. viii, 28-34, 

 pi. ix. 13, 14. 

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



Pachydictya ? firma Ulrich. 



1890. Pachydictya firma. Ulrich, Geol. Sur. Illinois, VIII, p. 525, pi. xxxi, 2-2/. 

 Cincinnati (Richmond): Wilmington, Illinois. 



Pachydictya foliata Ulrich. 



1886. Pachydictya foliata. Ulrich, Fourteenth Ann. Rep. Geol. Nat. Hist. Sur. 



Minnesota, p. 73. 

 1893. Pachydictya foliata. Ulrich, Geol. Minnesota, III, p. 149, pi. ix, 1-5, pi. x, 



5-10. 



1896. Pachydictya foliata. Ulrich, Zittel's Textb. Pal. (Eng. ed.) , fig. 470 (p. 283). 

 Trenton (Stones River): Minneapolis, St. Paul, Cannon Falls, Preston, and 



Fountain, jMinnesota. 



Pachydictya gigantea Ulrich. 



1890. Pachydictya gigantea. Ulrich, Geol. Sur. Illhiois, VIII, p. 524, pi. xxxi, 

 3-3e. 

 Cincinnati (Richmond) : Wikuington, Illinois. 



