BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1003 



Plectorthis (Encuclodema) sectostriata (Ulrich). 



Orthis(?) sectostriata Ulrich, Jour. Cincinnati Soc. Nat. Hist., 2, 1879, p. 15, pi. 

 * 7, fig. 11. 



Plectorthis? sectostriata Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 221. 

 Cycloccelia sectostriata Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 227 



(gen. ref.); 16, 1910, p. 37, pi. 3, fig. 15a, b. 

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



Plectorthis (Encuclodema) sordida (Hall). 



Orthis sordida Hall, Pal. New York, 1, 1847, p. 148. 



Cycloccelia sordida Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 227; 



16, 1910, p. 36, pi. 2, fig. 10'; pi. 6, fig. 8a, b. 

 Orthis ella Hall, 13th Rep. New York State Cab. Nat. Hist., 1861, p. 121. 

 Orthis? ella Hall, 15th Rep., ibid., 1862, pi. 2, figs. 6-8; 24th Rep., ibid., 1872, pi. 



7, fig. 21.— Meek, Pal. Ohio, 1, 1873, p. 105, pi. 8, fig. 9.— Hall and Whitfield, 



ibid., 2, 1875, p. 76, pi. 1, fig. 20.— Miller, Cincinnati Quart. Jour. Sci., 2, 



1875, p. 32.— Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 514, figs. 

 Plectorthis? ella Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 221, pi. 5, 



figs. 22, 23. 

 Plectorthis ella Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, p. 924, 



pi. 36, figs. 2-2c. 

 Cycloccelia ella Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 227; 16, 



1910, pi. 2, figs. 11, 12. 

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



Plectorthis (Encuclodema) sordida multiplicata Foerste. 



Cycloccelia sordida multiplicata Foerste, Bull. Sci. Lab. Denison Univ., 16, 1910, 



p. 36, pi. 6, figs. 6a-d, 7a-d. 

 Maysville (Fairrnount): Cincinnati, Ohio. 



Plectorthis triplicatella Hall and Clarke. See Plectorthis fissicosta triplicatella. 



Plectorthis (Austinella) whitfieldi (N. H. Winchell). 



Orthis whitfieldi N. H. Winchell, 9th Ann. Rep. Geol. Nat. Hist. Surv. Minne- 

 sota, 1881, p. 115. 



Orthis pectinella Whitfield (part), Geol. Wisconsin, 4, 1882, p. 259, pi. 12, fig. 8. 



Plectorthis whitfieldi Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 221, 

 pi. 5, fig. 26.— Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 252, fig. 

 301g-i. 



Orthis (Plectorthis) whitfieldi Winchell and Schuchert, Geol. Minnesota, 3, 1893, 

 p. 437, pi. 33, figs. 8-13. 



Austinella whitfieldi Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 244 

 (gen. ref.); 17, 1912, p. 131, pi. 8, fig. 9. 



Plectorthis sp. cf. whitfieldi Ruedemann, Bull. New York State Mus., 162, 1912, 

 pi. 4, fig. 8. 



Richmond (Maquoketa): Spring Valley and Granger, Minnesota; Delafield, Wis- 

 consin; Lattners, Iowa; Savannah, Illinois. 



PLETHOCARDIA Ulrich. Genotype: P. umbonata Ulrich. 



Plethocardia Ulrich, 19th Ann. Rep. Geol. Nat. Hist. Surv. Minnesota, 1892, 

 p. 243.— Miller, N. A. Geol. Pal., 1st App., 1892, p. 701.— Ulrich, Geol. Minne- 

 sota, 3, pt. 2, 1894, p. 575. — Grabau and Shimer, N. A. Index Fossils, 1, 

 1909, p. 416. 



84243°— Bull. 92— vol 2—15 19 



