scHucHERT.] INDEX AND BIBLIOGRAPHY. 313 



Plectorthis sectistriata (E, O. Ulrich). Lorraine (Ord.). 



Orthis ( ?) sectostriata Ulrich, Jour. Cincinnati Soc. Nat. Hist., II, 1879, p. 15, pi. 

 7, fig. 11. 



Plectorthis? sectostriata Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 221. 



Loc. Cincinnati, Ohio. 

 Plectorthis triplicatella (Meek). Lorraine (Ord.). 



Orthis triplicatella Meek, American Jour. Sci., IV, 1872, p. 281;— Pal. Ohio, I, 

 1873, p. 109, pi. 8, fig. 8. — Miller, Cincinnati Quart. Jour. Sci., II, 1875, p 31. 



Plectorthis triplicatella Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 

 194, 221. 



Loc. Cincinnati, Ohio. 



Plectorthis whitfieldi (N. H. Winchell). Lorraine (Ord.). 



Orthis whitfieldi N. H. Winchell, Ninth Ann. Rep. Geol. and Nat. Hist., Survey 

 of Minnesota, 1881, p. 115. 



Orthis pectinella Whitfield (partim, non Emmons non Hall), Geol. Wisconsin, 

 IV, 1882, p. 259, pi. 12, fig. 8. 



Plectorthis whitfieldi Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 221. 

 pi. 5, fig. 26. 



Orthis (Plectorthis) whitfieldi Winchell and Schuchert, Minnesota Geol. Sur- 

 vey, III, 1893, p. 437, pi. 33, figs. 8-13. 



Loc. Spring Valley and Granger, Minnesota; Delafield, Wisconsin; Lattners. 

 Iowa; Savanna, Illinois. 



PLETHORHYNCHA Hall and O. Genotype Rhynchonella speciosa Hall 

 Plethorhyncha Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 191;— 



Thirteenth Ann. Rep. N. Y. State Geologist, 1895, p. 827. 

 Ols. Proposed as a subgenus of Cainarotrochia. It, however, does not seem 

 to be worthy even of that rank. The species referred to Plethorhyncha are 

 Camarota'chia barrandci Hall, C. ])leiopleura (Conrad), and C. speciosa Hall, 



Plicatula striatocostata Cox=Meekella striaticostata. 



POLYTCECHIA Hall and Clarke. Genotype Hemipronites apicalis Whitf. 

 Polytoechia Hall and Clarke, Pal. New York, VIII, Pt. 1, 1892, p. 239, figs. 11, 12 ;^ 

 Eleventh Ann. Rep. N. Y. State Geologist, 1894, p. 275. 



Polytcechia apicalis (Whittield). Calciferous (Ord.). 



Hemipronites apicalis Whitfield, Bull. American Mus. Nat. Hist., II, 1886, p. 300, 



pi. 24, figs. 1-5. 

 Polyttcchia apicalis Hall and Clarke, Pal. New York, VIII, Pt. 1, 1892, p. 239, fig. 



11, 12, pi. 7A, figs. 26-30. 

 Loc. Fort Cassiu, Vermont. 



PORAMBONITES Pander. Genotype Poranibonites intermedia Pander. 

 Porambouites Pander, Beitrage zur Geognosie des Russ. Reichcs, 1830, p. 95, pi. 3, 



fig. 9.— Hall and Clarke, Pal. New York, VIII, Pt. II, 1895, p. 225.' 

 Ohs. Not represented in America. 



Poranibonites obscurus Hall and Wbitlield=Parastrophia obscurus. 

 Porambonites ottawaensis Billings=Rbyucliotrema ottawaensis. 



PROBOSCIDELLA (Elilert. Genotype Productus proboscideus de Vern. 

 Proboscidella ffihlert, Fischer's Manuel de Conchyliologie, 1887, p. 1277. — Hall 

 and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 333. 



Proboscidella (?) clava (Norwood and Pratten). Upper Carboniferous. 

 Productus clavus Norwood and Pratten, Jour. Acad. Nat. Sci. Philadelphia, III, 



1854, p. 10, pi. 1, fig. 4. 

 Proboscidella clava Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 334. 

 Loc, Graysville, Illinois. 



