BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 895 



Orthis panderiana Hall and Clarke. 



Orthis ortharnbonites Billings (not Murehison and Verneuil), Pal. Foss., 1, 

 Geol. Sun^. Canada, 1865, p. 77, fig. 70 (Adv. sheets, 1862); Geol. Canada, 

 1863, p. 231, fig. 245— Schuchert, 9th Ann. Rep. New York State Geol., 1890, 

 p. 43— Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pp. 221, 228, pi. 5, 

 figs. 1-3.— Matthew, Trans. Roy. Soc. Canada, 10, 1893, p. 101, pi. 7, fig. 4.— 

 Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 526, figs. 



Orthis panderiana Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pi. 5, footnote; 

 48th Rep. New York State Mus., 2, for 1895, 1897, p. 338, pi. 4, figs. 1-3; 14th 

 Rep. State Geol. New York for 1894, 1897, p. 338, pi. 4, figs. 1-3. 



Canadian: Point Levis, Quebec (Levis-erratics); St. John, New Brunswick 

 (Bretonian-Div. C3d). 



Orthis parva Billings. See Dalnianella meeki. 



Orthis pectinella Whitfield. See Plectorthis (Austinella) whitfieldi. 



Orthis pectinella Emmons. See Dinorthis pectinella. 



Orthis pectinella var. semiovalis Hall. See Dinorthis pectinella. 



Orthis pepina Hall. See Billingsella coloradoensis. 



Orthis perveta Billings. See Hebertella vulgaris. 



Orthis perveta Conrad. See Pianodema subrequata perveta. 



Orthis perveta Hall. See Pianodema subeequata. 



Orthis petrae Sardeson. See Dinorthis proavita. 



Orthis(?) piger Billings. 



Orthis piger Billings, Canadian Nat. Geol., 4, 1859, p. 442. — Raymond, Ann. 



Carnegie Mus., 7, 1911, p. 247. 

 Orthis(?) pigra Schuchert, Bull. U. S. Geol. Surv., 87, 1897, p. 290. 

 Clitambonites piger Schuchert and Twenhofel, Bull. Geol. Soc. Amer., 21, 



1910, p. 691. 

 Chazyan (Mingan) : Mingan Islands, Canada. 



Orthis pisum Hall. See Nucleospira pisiformis. 



Orthis plana Castelnau. See Rafinesquina alternata. 



Orthis platys Billings. See Dinorthis (Plaesiomys) platys. 



Orthis plicatella White. See Orthis tricenaria. 



Orthis plicatella Hall. See Plectorthis plicatella. 



Orthis (Plectorthis) plicatella Winchell and Schuchert. See Plectorthis plica- 

 tella trentonensis. 



Orthis plicatella var. triplicatella Lesley. See Plectorthis fissicosta triplicatella. 



Orthis? (Delthyris) plicatus Hall. See Spiriier vanuxemi. 



Orthis (Delthyris) plicatus Hall. See Spirifer (Delthyris) vanuxemi. 



Orthis poqonipensis Hall and Whitfield. See Pianodema pogonipensis. 



Orthis porcata Billings. See Dinorthis (Plsesiomys) porcata anticostiensis. 



Orthis porcia Billings. See Clitambonites porcia. 



