FOSSILS OF THE NIAGARA GROUP. 435 



III. LIST OF FOSSILS OF THE NIAGARA GROUP, OCCURRING IN THE WISCONSIN, 

 ILLINOIS AND IOWA LIMESTONES. 



FORAMINIFERA. 



Keceptaculites hemisphaericus, Hall. Geolog. Report of Wisconsin. 1861. 



R. infundibulus. Hall. Id. pa. = Ischadites tessellatus, Winch. & Mae.j 



ZObPHYTA. 



Diplophylluni caespitosum, Hall. Pal. N. Y., IT, p. 116, pi. 33, fig. 1. 



Favosites favosa, Gold. Pal. N. Y., II, p. 126, pi. 34 bis., fig. 5. 



J^. gothlandica ? = F. niagarensis. Hall. 



F. niagarensis. Hall. Pal. N. Y., II, p. 125, pi. 34 bis., fig. 4 a, b. 



F. striata. Sat, in Amer. Jour. Sci., VII., p. 381 = ? F. favosa. Gold. 



F. venusta (Hall), Winch. & Mar. 



Halysites catenulatus, Linn. 



H. macrostylis, Hall. Pal. N. Y., IT, p. 135, pi. 362, fig. 2. 



Heliolites pyriformis, Guett. Pal. N. Y., II, p. 133, pi. 36 A, fig. 1. 

 *Petraia calicula (Hall) = Strepielasma calicula. Hall. Pal. N. Y., II, p. Ill, pi. 32, fig. 1. 



Stromatopora concentrica, Goldp. 

 *Zaphrentis turbinatum (Hall) = Polydilasma turbinatum. Hall. Pal. N. Y.,II, p. 112. 



BRYOZOA. 



*Cladopora fibrosa. Hall. Pal. N. Y., II, p. 139. 

 *C. lichenoides. Winch. & Mak. 



C. reticulata, Hall. Pal. N. Y., II, p. 141, pi. 39, fig. 3. 



*C. seriata, Hall. Pal. N. Y , II, p. 137. 



*C. verticillata, Winch. & Mar. 



Fenestella elegans, Hall. Pal. N. Y., II, p. 164. 

 *Lichenalia concentrica. Hall. Identified by Winch. & Mar. 



Polypora incepta, Hall. Pal. N. Y., II, p. 167. 

 *Stictopora punctipora. Hall. Identified by Winch. & Mar. 



ECHINODERMATA. 



Actinocrinus (Saccocrinus) semiradiatus, Hall. 



A. (Saccocrinus) whitfieldi. Hall, = jJctinocrinus christyi, Hall. 



Apiocystites imago. Hall. 



Caryocrinis ornatus. Say. (PI. xi, fig. 17 of this Report.) 

 Crinocystites chrysalis. Hall. 

 Cyathocrinus cora. Hall. 



C. pusillus. Hall, = Lecanocrinus pusillus. Winch. & Mar. 



0. waukoma. Hall. 



Echinocystites nodosus, Hall. 



Eucalyptocrinus caslatus. Hall. Pal. N. Y., II, p. 210, pi. 47, fig. 4. 

 *E. chicagoensis, Winch. & Mar. 



E. cornutus. Hall. 



E. cornutus var. excavatus. Hall. 



E. crassus, Hall. 



Eucalyptocrinus obconicus. Hall. 

 E. ornatus, Hall. 



* Species which have not come under the ob.servation of the writer. 



f In the Memoirs of the Boston Society of Natural Bistory, vol. i, 1865; as also the subsequent citations of 

 same authors. 



