260 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



624. Populites litigiosus (Heer) Lesquereux. Illustrated specimen. 

 Dakota (Cret.). Blackbird Hill, Nebraska. 



Lesquereux, Mon. XVII, U. S. Geol. Surv., 1892, p. 46. 



See Populus litigiosa. 



2770. Populites litigiosus (Heer) Lesquereux. 

 501 18. Illustrated specimens. 



50139. Dakota (Cret.). Near Fort Harker, and ten miles north- 



east of Delphos, Kansas. 



Lesquereux, Mon. XVII, U. S. Geol. Surv., 1892, p. 46, pi. 7, fig. 7; 

 pi. 8, fig. 5; pi. 47, fig. 1. 



633. Populites ovata Lesquereux. 'Type. 



633b. Dakota (Cret.). Decatur, Nebraska. 



Lesquereux, Amer. Journ. Sci. (2), XL VI, 1868, p. 94. 



= Ampelophyllum ovatum. 

 See Celtis? ovata. 



645a. Populites quadrangularis Lesquereux. Type. 



Dakota (Cret.). Fort Harker, Kansas. 



Lesquereux, Amer. Journ. Sci. (2), XLVI, 1868, p. 94. 



= Hamamelites quadrangularis. 

 See Alnites quadrangularis. 



690 Populites salisburiaefolius Lesquereux. Types, 



to Dakota (Cret.). Lancaster County, Nebraska. 



°9 2 - Lesquereux, Amer. Journ. Sci., XLVI, 1868, p. 94. 



= Cissites salisburiaefolius. 

 See Sassafras obtusum. 



3390. Populophyllum crassinerve Fontaine. Type. 



Potomac (Low. Cret.). Deep Bottom, Virginia. 



Fontaine, Mon. XV, U. S. Geol. Surv., 1889, p. 312, pi. 158, fig. 4. 



3440. Populophyllum hederaeforme Fontaine. Type. 



Potomac (Low. Cret. ). 72d milepost, near Brooke, Virginia. 



Fontaine, Mon. XV, U. S. Geol. Surv., 1889, p. 311, pi. 166, fig. 3. 



3403. Populophyllum reniforme Fontaine. Type. 



Potomac (Low. Cret. ) . 72d milepost, near Brooke, Virginia. 



Fontaine, Mon. XV, U. S. Geol. Surv., 1889, p. 311, pi. '55, fig. 9; 

 pi. 156, fig. 3. 



224. Populus acerifolia Newberry. Types. 



225. Fort Union (Tert.). Fort Union, North Dakota. 



55 *• Newberry, Ann. Lye. Nat. Hist. N. Y., IX, 1868, p. 65; U. S. Geol. 



552. Surv. Terr., Ills. Cret. and Tert. Plants, 1878, pi. 13, figs. 5-8; 



6968. Mon. XXXV, U. S. Geol. Surv., 1898, p. 37, pi. 28, figs. 5-8. 



4051. Populus amblyrhyncha Ward. Types. 



4060. Fort Union (Tert.). Seven Mile Creek, below Glendive, 



5362. Montana. 



Ward, Bull. No. 37, U. S. Geol. Surv., 1887, p. 20, pi. 6, figs. 2, 5, 7. 



