612 BULLETIX 92, UNITED STATES NATIONAL MUSEUM. 



Heterocrinus laxus Hall. See Ohiocrinus laxue. 



Heterocrlnus mlllerl Wetherby. 



IleterocrLniis Milleri Wetherby, Jour. Cincinnati Soc. Nat. Hist., 3, 1880, p. 153, 



pi. 5, fig. 3. 

 Stenocrinus Milleri Waclismuth and Springer, Proc. Acad. Nut. Sci. Philadelphia, 



1886, p. 132 (Rev. Pal., pt. 3, sec. 2, p. 208). 

 Trenton (Curdsville): Mercer County, Kentucky; Kirkfield, Ontario. 



Heterocrinus <ehanus Miller. See Ohiocrinus laxus. 



Heterocrlnus pentagonus Ulrich. 



Heterocrinus pentagonus Ulrich, Jour. Cincinnati Soc. Nat. Hist., 5, 1882, p. 176, 

 pi. 5, figs. 10 and 10a. 



Stenocrinus pentagonus Wachsmuth and Springer, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1886, p. 132 (Rev. Pal., pt. 3, sec. 2, p. 208). 



Maysville (Corryville) : Cincinnati, Ohio, and vicinity. 



Heterocrinus? (Iocrinus) polyxo Hall. See locrinus subcrassus. 



Heterocrinus simplex Hall. See Ectenocrinus simplex. 



Heterocrinus simplex var. grandis Meek. See Ectenocrinus grandis. 



Heterocrinus subcrassus Meek and Worthen. Gee Iocrinus subcrassus. 



Heterocrlnus tenuis Billings. 



Heterocrinus tenuis Billings, Geol. Surv. Canada, Rep. Progress, 1853-56, 1857, 



p. 273; Geol. Surv. Canada, dec. 4, 1859, p. 50, pi. 4, fig. 6a-b; pi. 10, figs. 



la-e. — Grabau and Shinier, N. A. Index Fossib, 2, 1910, p. 502. — Springer, 



Mem. Geol. Surv. Canada, 15P, 1911, p. 25. 

 Stenocrinus tenuis Waclismuth and Springer, Proc. Acad. Nat. Sci. Philadelphia, 



1886, p. 132 (Rev. Pal., pt. 3, sec. 2, p. 208). 

 Trenton (Curdsville): Ottawa and Kirkfield, Ontario; Montreal, Quebec. 



Heterocrinus vaupeu Wetherby. See Ohiocrinus constrictus. 



HETEROCYSTITES Hall. Genotype: H. armatus Hall. 



Heterocystites Hall, Pal. New York, 2, 1852, p. 229.— Pictet, Traite de Pal., 2d 



ed., 4, 1857, p. 303.— Hall, Pal. New York, 3, for 1859, 1861, p. 152.— Miller, 



N. A. Geol. Pal., 1889, p. 253.— Bather, Treatise on Zool. (Lankester), pt. 3, 



1900, p. 67, fig. 36, 7. 



Heterocystltes armatus Hall. 



Heterocj-stitoa armatus Hall, Pal. New York, 2, 1852, p. 229, pi. 49A, figs. 3a-c. — 



Jaekcl, Stammes. Pelmat., 1, Tliecoidea u. Cj-stoidea, Berlin, 1899, p. 345. 

 Niagaran (Lockport): Lockport, New York. 



Heterodictva Zitt<?l. See Ptilodictya Ix)nsdale. 



Heterodictya pavonia Ulrich. Sec Escharopora pavonia. 



HETERONEMA Ulrich and Basslor. Genotype: II. oapillare Ulrich and Bassler. 



lletoronema Ulrich and Bassler, Smith. Misc. Coll., 45, 1904, p. 278.— Bassler, 

 Bull. U. S. Nat. Mils., 77, 1911, p. 57; Zittel-Eastman Textb. Pal., 1913, 

 p. 318. 



