280 AMEKICAN FOSSIL BEYOZOA. [bull.173, 



Goniotrypa bilateralis Ulrich — Continued. 



1895. Goniotrypa bilateralis. Whiteave.s, Pal. Foss, III, p. 118. 

 Cincinnati (Richmond): Stony Mountain, Manitoba. 



Gorg-onia Linna?us. Not Paleozoic. 



Gorgonia anticorum. Castelnau. Not recognized. 



1843. Gorgonia anticorum. Castelnau, Syst. Sil., p. 50, pi. xxiv, 1. 

 Lake Huron. 



Gorgonia? aspera Hall. See Ph^dloporina aspera (Hall). 



Gorgonia infiindibuliformis Eaton. Not recognized. 



1832. Gorgonia infundibuliformis. Eaton, Geol. Text-l)ook, ed. 2, ]>. 43. 



Gorgonia perantiqua Hall. Not recognizable. 



1847. Gorgonia perantiqua. Hall, Pal. New York, I, p. 76, pi. xxvi, 5o, Jk 

 1850. Enallopora perantiqua. D'Orbigny, Prodr. de Pal., I, p. 22. 

 1889. Enallopora perantiqua. Miller, North American Geol. Pal., p. .301. 

 Trenton: Middleville, Herkimer County, New York. 



Gorgonia retiformi.s Hall. Not a l^rvozoan. See Pal. New York, II, 

 185^, p. IT-i. 

 1843. Gorgonia ? retiformis. Hall, Geol. Rep. Fourth District New York, p. 115, 

 fig. 1. 



Gorgonia fsiluriana Castelnau. Not recognized. 



1843. Gorgonia siluriana. Castelnau, Syst. Sil. , p. 50. 



GRAPTODICTYA Ulrich. Genotype: Ptilodictj^a perelegans Ulrich. 



1882. Graptodictya. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, pp. 151, 165. 



1889. Graptodictya. Miller, North American Geol. Pal., p. 307. 



1890. Graptodictya. Ulrich, GeoL Surv. Illinois, VIII, p. 393. 



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

 for the year 1894, p. 541. 



Graptodictya nitida Ulrich. See Graptodictya perelegans (Ulrich). 



Graptodictya perelegans (Ulrich). 



1878. Ptilodictya perelegans. Ulrich, Jour. Cincinnati Soc. Nat. Hist., I, p. 94, 



pi. iv, 16, 16a. 

 1882. Graptodictya perelegans. Ulrich, Jour. Cincinnati Soc. Nat. Hist.,V, p. 165. 



1882. Graptodictya nitida. Ulrich, Jour. Cincinnati Soc. Nat. Hist., \\ p. 166, 



pi. vii, 8, 8o. 

 Cincinnati (Richmond): Clarksville and other localities in Ohio. 



HEDERELLA Hall. Genotype: Alecto? Canadensis Nicholson. 



1883. Hederella. Hall, Trans. Albany Institute, X, p. 194 (abstract, 1881, p. 194). 

 1887. Hederella. Hall and Simpson, Pal. New York, VI, p. xxvi. 



1889. Hederella. Miller, North American Geol. Pal., p. 308. 



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



the year 1894, p. 599. 

 1899. Hederella. Gral)au, Bull. Buffalo Soc. Nat. Sci. , VI, p. 178. 

 1885. Nicholsonia. Davis, Kentucky Foss. Corals, part 2. (Name proposed but 



not defined. ) 



Hederella adnata (Davis). 



1885. Nicholsonia adnata. Davis, Kentucky Foss. Corals, part. 2, pi. Ixxviii, 19. 

 (Not described.) 

 Hamilton: Falls of the Ohio. 

 Obs. — Compare this form with Hederella filiformis (Billings). 



