No.1738. FOSSIL PLANTS OF THE GENUS VAGEIOPSIS BERRY. 191 



st ant in their proportions; very long and narrow, linear-lanceolate, 

 sometimes somewhat falcate, acute, averaging about 3 nun. in width, 

 in some instances only 1 .."> mm. wide, greatesl width observed 1 mm.; 

 length 2 to 7 cm., averaging about 5 cm.; veins of fine caliber, gen- 

 erally eight in number, sometimes observed to fork at the base. An 

 abundant species suggestive of Cephalotaxopsis in general appearance, 

 but perfectly distinct and easily distinguished by the stomatal 

 grooves of the latter. 



Occurrence. — Patuxent formation. Fredericksburg, near Dutch 

 Gap, near Potomac Run, Virginia; Sixteenth street, District of Co- 

 lumbia. Arundel formation. Bay View, Maryland. Patapsco 

 formation. Near Brooke, Mount Vernon, Virginia; Federal Hill, 

 Fort Foote, Fort Washington (?), Maryland. ( ?) Lakota forma- 

 tion. Barrett, Crook County, Wyoming. ( ?) Shasta formation. 



NAGEIOPSIS ZAMIOIDES Fontaine. 



Nageiopsis zamioides Fontaine, Monogr. I*. S. Geol. Surv., No. L5, L890, p. L96, 

 pi. Tit, figs. 1, 3; pi. 80, figs. 1, 2, 4; pi. 81, figs. L-6. — Fontaine, in Ward, 

 Monogr. U. S. Geol. Surv., No. 48, 1905, pp. 510, 521, 528, 545. 



Nageiopsis recurvata Fontaine, Monogr. U. S. Geol. Surv., No. 15, 1890, p. L97, 

 pi. 75, fig. 2; pi. 7'.), fig. 4; pi. SO, fig. 3. 



Nageiopsis decrescens Fontaine, Monogr. V. S. Geol. Surv., No. 15, 1890, p. 1!)!), 

 pi. 77, fig. 3. 



Nageiopsis ovata Fontaine, Monogr. L*. 8. Geol. Surv., No. 15, 1890, p. 199, pi. 



77. fig. I; pi. 80, fig. 5. 



Nageiopsis heterophylla Fontaine, Monogr. U. S. Geol. Surv., No. 15, 1800, p. 201, 



pi. 84, fig. 4; pi. 86, figs. 6, 7; pi. 88, figs. 2, 5.— Fontaine, in Ward, Monogr. 



F. S. Geol. Surv., No. 48, 1905, pp. 219 (?), 483, 520, 548, 561, pi. 117, fig. (i. 

 Nageiopsis microphylla Fontaine, Monogr. U. S. Geol. Surv.. No. 15, 1890, p. 201, 



pi. 84, fig. ti; pi. 85, fig. 14; pi. 86, figs. 1-3, 5. Fontaine, in Ward, Monogr. 



IT. S. Geol. Surv.. No. 18, 1905, p. 484. 

 Nageiopsis cf. N. heterophylla Fontaine, Seward, Wealden Flora, pt. 2, 1895, 



p. 211, pi. 12, fig. 3. 



Description. — Leaves ovate-lanceolate, proportionately shorter and 

 wider than in X. angustifolia and much shorter and more rounded in 

 outline than in N. longifolia, broadest toward the rounded base, the 

 maximum width observed being 1.5 cm., although the average width 

 is much less and may be put at 1 cm. or slightly less; very variable in 

 size, tip generally acute, although an occasional specimen may be 

 obtuse. The greatest length observed is 8 cm., but the average length 

 is much less than this, and may be placed at 3 cm. to 1 cm. 

 Occasional twigs like the solitary specimen described as N. decres- 

 cens or the specimens referred to X. microj>/i i/l/a may be much 

 smaller than the above; the latter arc, however, of the same gen- 

 eral shape, while in the former case the fact that the larger leaves 

 at the base of the specimen are replaced by very minute leaves indi- 

 cates that the specimen is an abnormal twig. Veins line in caliber, 

 somewhat remote, generally six to nine in number, forking at the base 



