260 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



624. Populites litigiosus (Heer) L,esquereux. Illustrated specimen. 

 Dakota (Cret.)- Blackbird Hill, Nebraska. 



Lesquereiix, 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., 1S92, p. 46, pi. 7, fig. 7; 

 pi. 8, fig. 5; pL 47, fig. I. 



633. Populites ovata Lesquereux. I^ype. 



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



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



= Ampelophyllum ovatum. 

 See Celtis? ovata. 



645a. Populites quadrangularis Lesquereux. I^ype. 



Dakota (Cret.). Fort Harker, Kansas. 



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



= Hamamelites quadrangularis. 

 See Alnites quadrangularis. 



690 Populites salisburiaefolius Lrcsquereux. Types, 



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

 "92- I^esquereux, Amer. Journ. Sci., XI^VI, 1868, p. 94. 



= Cissites salisburiaefolius. 

 See Sassafras obtusum. 



3390. Populophyllum crassinerve Fontaine. Type. 



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



Fontaine, Mon. XV, V. S. Geol. Surv., 1889, p. 312, pL 158, fig. 4 



3440. Populophyllum hederaeforme Fontaine. Type 



Potomac ( Low. Cret. ). 7 2d niilepo.st, near Brooke, Virginia 



Fontaine, Mon. XV, U. vS. Geol. Surv., 1889, p. 311, pL 166, fig. 3 



3403. Populophyllum reniforme Fontaine. Type 



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



F'ontaine, 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. 



551- 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.). vSeven Mile Creek, below Glendive, 



5362. Montana. 



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



