scHucHERT.] INDEX AND r.IlUJOGRAPHY. 271 



Monomorella greenei ITall and Clarke. Niagara (Sil.). 



Moiioniorella greonii Hall aud Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 42, 



17$, pi. 4D, figs. 5-10. 

 Lur. Near (iraf'ton, Wisconsin; Risingsun, Ohio. 



Monomorella kingi Hull uiid Clarke. Niagara (Sil.). 



Monomorella kingi Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 42, 



174, pi. 4D, figs. 1, 2. 



Lnc. Near Cedarbnrg, Wisconsin; Hawthorne, Illinois. 



Monomorella newberryi Hall and Whitfield. Niagara (Sil.). 



Monomorella newborryi Hall and Whitfield, Pal. Ohio, II, 1875, p. 131, pi. 7, figs. 



I, 2.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 4C, figs. 1, 2. 

 Loc. Genoa, Ohio. 



Monomorella orbicularis Billings. Guelph (Sil.). 



Monomorella orbicularis Billings, Canadian Nat. Geol., n. ser., VI, 1871, p. 221;— 



American Jour. Sci., 3d ser.. Ill, 1872, p. 3.59. — Davidson and King, Quart. 



Jour. Geol. Soe. London, XXX, 1874, p. 1.58, pi. 17, fig. 10. 

 Monomorella cuf. orbicularis Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, 



pi. 4C, figs. 3-5. 

 Lov. Hespelar, Ontario; near Grafton, Wisconsin. 



Monomorella ortoni Hall aud Clarke. Niagara (Sil.). 



Monomorella ortoni Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 42, 



175, pi. 4C, figs. 14, 15. 



Loc. Risingsun, Wood County, Ohio. 



Monomorella ovata Wliiteaves. Guelph (Sil.). 



Monomorella ovata Whiteaves, Pal. Fossils, III, 1884, p. 5, pi. 2, fig. 1; pi. 8, 

 fig. 1.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 42, pi. 4D, figs. 

 13-15. 



Loc. Durham, Ontario. 



Monomorella ovata lata Whiteaves. Guelph (Sil.). 



Monomorella ovata var. lata Whiteaves, Pal. Fossils, III, 1884, p. 6, pi. 2, fig. 

 2; pi. 8, fig. 2.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 4, figs. 



II, 12; pi. 4C, figs. 17, 18. 



Loc. Durham, Ontario; Hawthorne, Illinois. 



Monomorella prisca Billings. Guelph (Sil.). 



Monomorella prisca Billings, Canadian Nat. Geol, n. ser., VI, 1871, p. 221 ; — Amer- 

 ican Jour. Sci., 3d ser., Ill, 1872, p. 359. — Davidson and King, Quart. .lour. 

 Geol. Soc. London, XXX, 1874, p. 156, pi. 17, figs. 5-8.— Nicholson, Pal. Prov. 

 Ontario, 1875, p. 68, tig. 38.— Hall and Clarke, Pal. New York, VIII, Pt. I, 

 1892, pi. 4C, figs. 6-13. 



Loc. Hespelar and Elora, Ontario; Risingsun, Wood County, Ohio; Hawthorne, 

 Port Byron, and Cicero, Illinois. 



NEWBERRYA Hall. Genotype Rensselajriaf johanni Hall. 



Rensselandia Hall, Pal. New York, IV, 1867, p. 385. 



Newberria Hall, Cont. Canadian Pal., I, 1891, p. 236;— Tenth Ann. Rep. N. Y. 

 State Geol., 1891, p. 91 (extract, p. 4).— Hall and Clarke, Pal. New York, VIII, 

 Pt. II, 1893, p. 261;— Thirteenth Ann. Rep. N. V. State Geologist, 1895, p. 851. 



Ohx. It is unfortunate that Renssela-ria johanni is the type for two generic 

 names. Adhering strictly to the rules of nomenclature Rensselandia will 

 take precedence over Newberrya. The first term is, however, improperly 

 constructed and is without meaning. 



