386 Systematic Paleontology 



tion also are all fragmentary and Tincharacteristie, and while we wonld 

 expect to find this species in the West, the nature of the remains thus 

 far collected scarcely justifies the identifications which have been 

 based upon them, and as furnishing facts for stratigraphic correlation- 

 they are absolutely valueless. 



Occurrence. — Patuxent Formation. Fredericksburg, Potomac Eun, 

 Telegraph Station (Lorton), Cockpit Point, Kankeys, Dutch Gap, Vir- 

 ginia. Aeundel Formation. Langdon, District of Columbia. 

 Patapsco Formation. Federal Hill (Baltimore), Vinegar Hill (?), 

 Ft. Foote, Maryland; Mt. Vernon, Chinkapin Hollow (?) Brooke, 

 Deep Bottom (?), Virginia. 



Collection. — 11'. S. National Museum. 



ISTageiopsis zamioides Fontaine 

 Plate LXII, Figs. 1, 2 ; Plate LXIII 



Nageiopsis zamioides Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 1889, p. 



196, pi. Ixxix, figs. 1, 3; pi. Ixxx, figs. 1, 2, 4; pi. Ixxxi, figs. 1-6. 

 Nageiopsis recurvata Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 1889, 



p. 197, pi. Ixxv, fig. 2; pi. Ixxix, fig. 4; pi. Ixxx, fig. 3. 

 Nageiopsis decrescens Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 1889, 



p. 199, pi. Ixxvii, fig. 3. 

 Nageiopsis ovata Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 1889, p. 



199, pi. Ixxvii, fig. 4; pi. Ixxx, fig. 5. 

 Nageiopsis heterophylla Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 



1889, p. 201, pi. Ixxxiv, fig. 4; pi. Ixxxvi, figs. 6, 7; pi. Ixxxviii, figs. 2, 5. 

 Nageiopsis microphylla Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 1889, 



p. 201, pi. Ixxxiv, fig. 6; pi. Ixxxv, fig. 14; pi. Ixxxvi, figs. 1-3, .5. 

 Nageiopsis cf. N. heterophylla Font., Seward, 1895, Wealden Flora, pt. ii, 



p. 211, pi. xii, fig. 3. 

 Nageiopsis zamioides Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv., vol 



xlviii, 1905, pp. 510, 521, 528, 545. 

 Nageiopsis heterophylla Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv., 



vol. xlviii, 1905, pp. 219 (?), 483, 520, 548, 561, pi. cxvii, fig. 6. 

 Nageiopsis microphylla Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv. 



vol. xlviii, 1905, p. 484. 

 Nageiopsis zamioides Berry, 1910, Proc. U. S. Natl. Mus., vol. xxxviii, p. 



191, tf. 2. 



Description. — Leaves ovate-lanceolate, proportionately shorter and 

 wider than in N. angusiifolia and much shorter and more rounded in 



