244 Systematic Paleontology 



Pecopteris angustipennis Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 



1889, p. 87, pi. xxi, fig. 10. 

 Pecopteris Browniana Fontaine, 1892, Proc. U. S. Natl. Mus., vol. xv, p. 492. 

 Pecopteris Browniana Dawson, 1893, Trans. Roy. Soc. Can., vol. x, sec. iv, 



p. 84, fig. 3. 

 Pecopteris Browniana Saporta, 1894, Fl. Foss. Portugal, pp. 35, 78, pi. iv, 



figs. 11-13; pi. X, fig. 19; pi. xi, figs. 9, 10; pi. xii, figs. 2, 3; pi. xv, 



figs. 19, 29; pi. xvi, figs. 12, 16, 17, 19. 

 Gladophlehis Browniana Seward, 1894, Wealden Fl., pt. i, p. 99, pi. vii, fig. 4. 

 CladopMeMs inclinata Fontaine, 1894, in Diller and Stanton, Bull. Geol. 



Soc. Am., vol. V, p. 450. 

 Pecopteris Broioniana Yokoyama, 1895, Journ. Coll. Sci., Imp. Univ., vol. 



vii, p. 218, pi. xxiv, figs. 2, 3; pi. xxvii, figs. 1-4, 5c, d. 

 Pecopteris of. virginiensis Yokoyama, 1895, Journ. Coll. Sci., Imp. Univ., 



vol. vii, p. 220, pi. xxiv, fig. 1. 

 CladophleMs Browniana Seward, 1903, Ann. S. Afr. Mus., vol. iv, p. 10, 



pi. ii, figs. 1-4, 6. 

 CladophleMs Browniana Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv., 



vol. xlviii, 1905, pp. 272, 510, 517, 538, 544, 547, 557, 572. 

 CladophleMs crenata Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv., vol. 



xlviii, 1905, p. 547. 

 CladophleMs alata Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv., vol. 



xlviii, 1905, pp. 229, 480, 510, 540, 544, 557, pi. Ixv, figs. 17-21. 

 CladophleMs incequiloba Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv., 



vol. xlviii, 1905, p. 510. 

 Pecopteris virginiensis Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv., 



vol. xlviii, 1905, pp. 480, 538, 552, pi. cxvi, figs. 3, 4. 

 Pecopteris constricta Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv., vol. 



xlviii, 1905, p. 519. 

 CladophleMs Browniana Knowlton, 1907, Smith. Misc. Coll., vol. iv, pt. i, 



p. 108, pi. xi, fig. 1. 

 CladophleMs Browniana Knowlton, 1908, in Diller, Bull. Geol. Soc. Am., 



vol. xix,.1908, p. 386. 

 CladophleMs Browniana Berry, 1911, Proc. U. S. Natl. Mus., vol. xli, p. 312, 



Description. — Dunker, the original describer of this species, defines it 

 as follows : 



" Pecopteris fronde pinnata (bipinnata ?) pinnis lanceolatis, pinnulis 

 linearibus apice obtusis adnatis, opposites et alternis, venis tenerrimis 

 obliquis instructis; rachi tenui.^' — Dunker, 1846. 



The American material which the writer refers to this species is much 

 more abundant tlian that from abroad, and the foregoing diagnosis may 

 be amplified in the following terms : 



