174 CATALOGUE OF THE CRETACEOUS AND [bull. 152. 
Polypodium fadyenioide Font. Potomac FL, p. 104, pi. xvi, f. 4, 5, 
1889. 
Potomac formation: Near Potomac Run, Virginia. 
FOPULITES Lesquerenx. Am. Journ. Sci., vol. xlvi., p. 93, 1868. 
Populites affinis Lx.= Cissites affinis. 
Populites cyclophylia (Heer) Lx. Am. Journ. Sci., vol. xlvi, p. 93, 
1868 j Oret. FL, p. 59, 1871; Fl. Dak. Gr., p. 18, 1891. 
Populus cyclophylia Heer. Proc. Acad. Nat. Sci., Phila., vol. x, p. 266, 1858. 
Cissites cyclophylia Lx. Ann. Kept. U. S. Geol. and Geogr. Surv. Terr., p. 353, 
1874 [1876]. 
Dakota group: New Ulm, Minnesota; Lancaster and Decatur, Ne- 
braska; Peace River, Northwest Territory. 
Populites elegans Lx. Am. Journ. Sci., vol. xlvi, p. 94, 1868; Geol. 
and Nat. Hist. Surv. Minn, iii, p. 10, pi. A, f. 2; pi. B, f. 1, 1893. 
Dakota group: Decatur, Nebraska; New Ulm, Minnesota. 
Populites fagifolia Lx.= Grewiopsis flabellata. 
Populites flabellata Lx. = Grewiopsis flabellata. 
Populites lancastriensis Lx. Cret. Fl., p. 58, pi. vii, f. 1, 1874. 
Populus lancastriensis Lx. Am. Journ. Sci., vol. xlvi, p. 93, 1868. 
Dakota group: Lancaster, Nebraska; New Ulm, Minnesota. 
Populites litigiosus (Heer) Lx. Fl. Dak. Gr., p. 46, pi. vii, f. 7- pi. 
viii, f. 5; pi. xlvi, f. 6; pi. xlvii, f. 1, 1891. 
Populus litigiosa Heer. Phyll. Cret. d. Nehr., p. 13, pi. i, f. 2, 1866. 
Dakota group: Kansas; New Ulm, Minnesota. 
Populites microphyllus Lx. Trans. Am. Phil. Soc, vol. xiii, p. 430, 
pi. xxiii, f. 2, 3, 1869. 
Dakota group: Kansas. 
Populites ovata Lx. = Ampelophyllum ovatum. 
Populites probalsamifera Dn. Trans. Poy. Soc. Canada, vol. xi, sec. 
iv, p. 57, pi. vii, f. 23, 1893 [1894]. 
Upper Cretaceous : Port McNeill, Vancouver. 
Populites quadrangularis Lx. = Hamamelites quadrangularis. 
Populites salime Lx. = Menispermites saliime. 
Populites salisburiasfolius Lx. = Cissites salisburhefolius. 
Populites Sternbergii Lx. Fl. Dak. Gr., p. 45, pi. vii, f. 8, 9, 1891. 
Dakota group : Kansas. 
Populites Winchelli Lx. Geol. and Bot. Hist. Surv. Minn., vol. iii, p. 
12, pi. B, f. 2, 1893. 
Dakota group: New Ulm, Minnesota. 
POPULOPHYLLUM Fontaine. Potomac Fl., p. 311, 1889. 
Populophyllum crassinerve Font. Potomac Fl., p. 312, pi. clviii, f. 4, 
1881). 
Potomac formation : Deep Bottom, Virginia. 
Populophyllum hederaeforme Font. Potomac Fl., p. 311. pi. clxvi, f. 
3,1889. 
Potomac formation : Virginia. 
