WEST VIRGINIA GEOLOGICAL SURVEY 4! I 



NEUROPTERIS BIFORMIS Lesquereux (form) D. White. 



Bull. Geol. Soc. Am., vol. 6, 1895, P- 3 T 7- [Pottsville 

 group; Sewell formation]. 

 NEUROPTERIS ELRODI Lesquereux (form) D. White. 



Bull. Geol. Soc. Am., vol. 6, 1895, p. 317. [Pottsville 

 group; Sewell formation]. 

 NEUROPTERIS TENUIFOLIA (Schlotheim) Sternberg. 



Flora d. Vorwelt (Tentamen), 1825, p. xvii. [Pottsville 

 group; Clark formation]. 



Species characteristic of the upper Pottsville, especially 

 the Mercer group. The plant referred by Fontaine (Amer. 

 Jour. Sci., New Haven, vol. n, 1876, p. 380), to this species 

 is undoubtedly referable to the N. Smithii type. 

 NEUROPTERIS FLEXUOSA Sternberg. 



Flora d. Vorwelt (Tentamen), 1825, p. xvi, pi. xxxii, fig. 

 2, D. White: Bull. Geol. Soc. Am., vol. n, 1900, p. 164. 

 [Pottsville group; Kanawha formation.] 



Abundant in the Kanawha formation and the Mercer coal 

 group. The species from the Dunkard formation listed ( Sec- 

 ond Geol. Surv. Pa., Rept. Prog. PP, p. 49), under this name 

 is quite distinct. 



NEUROPTERIS PLANCH ARDI VAR. LONGIFOLIA (Fontaine & 1. C. 

 White) D. White. 



Second Geol. Surv. Pa., Rept. Prog. PP, 1880, p. 49, pi. 

 viii, fig. i. D. White: Bull. Geol. Soc. Am., vol. 14, 1903 

 [1904], p. 540. [Dunkard formation (Permian).] 



This variety is specifically distinct from N. flexuosa. 

 NEUROPTERIS LINDLEYANA Sternb., VAR. Fontaine. 



Am. Jour. Sci., 3rd ser., vol. n, 1876, p. 381. [Pottsville 

 group; Quinnimont formation]. 



The species listed under this name is probably the N. Poca- 

 hontas D. White. 

 NEUROPTERIS RARINERVIS Bunbury. 



Quart. Jour. Geol. Soc., London, vol. 3, 1847, p. 425, pi. 

 xxii. D. White: Bull. Geol. Soc. Am., vol. n, 1900, p. 169. 

 [Pottsville group; Kanawha formation]. [Also in Alle- 

 gheny formation]. 



Plant unknown below the "Mercer Coal group" and upper 

 Kanawha. 

 NEUROPTERIS SP. cf. GIGANTEA Sternberg. 



Flora d. Vorwelt (Tentamen), 1825, p. xvii, pi. xxii. D. 

 White: Bull. Geol. Soc. Am., vol. n, 1900, p. 163. [Potts- 

 ville group; Kanawha formation.] 



Type is strictly Pottsville. 

 NEUROPTERIS OVATA Hoffman. 



Teutschl. geogn. geol. (largest., Weimar, vol. 4, 1826, p. 

 159, pi. Ib, figs. 5-8. D. White: Bull. Geol. Soc. Am., vol 



