206 CATALOGUE OF THE CRETACEOUS AND [bull. 152. 
Sagenopteris latifolia Font. Potomac FL, p. 148, pi. xxvii, f. 10, 1889. 
Potomac formation: Near Telegraph Station, Virginia. 
Horsetown beds: Shasta County, California. 
Sagenopteris Mantelli (Dunk.) Schenk. Deutsch. Weald. FL, 
Palaaontogr., vol. xix p. 222, 1871 ; Font., in Diller and Stanton, 
Bull. Geol. Soc. Am., vol. v, p. 450, 1894. 
Knoxville beds: Tehama County, California. 
Sagenopteris virginiensis Font. Potomac FL, p. 150, pi. cxxxviii, f. 
13 j cxxxix, f. 1, 1889. 
Potomac formation : Fredericksburg, Virginia. 
Sagenopteris sp., Font in Diller and Stauton. Bull. Geol. Soc. Am., 
vol. v, p. 450, 1894. 
Knoxville beds: Tehama County, California. 
SAGITTARIA Euppius. Ex Linnaeus. Syst., ed. i, 1735. 
Sagittaria Victor-Masoni Ward. Fifteenth Ann. Rept. U. S. Geol. 
Surv., p. 354, pi. iii, f. 5, 1895. 
Potomac formation : Mount Vernon, Virginia. 
Sagittaria pulchella Heer. Fl. Foss. Alask., p. 25, pi. i, f. 15, 1869. 
Eocene?: Alaska. 
Sagittaria n. sp.? Lx. Proc. U. S. Nat. Mus., vol. x, p. 37, 1887. 
Eocene?: Sitka, Alaska. 
SALICIPHYLLUM Fontaine. Potomac FL, p. 302, 1889. 
Saliciphyllum ellipticum Font. Potomac FL, p. 303, pi. cxlvi, f. 2, 4; 
cl, f. 8; clxiii, f. 5; clxvi, f. 2, 1889. 
Potomac formation : near Dutch Gap Canal, Fredericksburg, and 
near Brooke, Virginia. 
Saliciphyllum longifolium Font. Potomac FL, p. 302, pi. cl, f. 12, 
1889. 
Potomac formation: near Potomac Run, Virginia. 
Saliciphyllum parvifolium Font. Potomac FL, p. 303, pi. clxxii, f. 
5, 1889. 
Potomac formation : Baltimore, Maryland. 
Salisburia adiantoides Ung.=Ginkgo adiantoides. 
Salisburia biternata Lx.=Ginkgo biternata. 
Salisburia (Ginkgo) lepida Heer. Dn.=Giukgo lepida. 
Salisburia nana Dn.=Ginkgo nana. 
Salisburia pusilla Do.=Ginkgo pusilla. 
Salisburia (Ginkgo) sibirica Heer Dn.=Ginkgo sibirica. 
Salisburia, nuts of, Dn.=Ginkgo sp. 
Salisburia, nutlets of, Dn. Trans. Roy. Soc. Canada, vol. iii, sec. iv, 
p. 17, 1885 [1886]. 
Lower Laramie group : Canada. 
SALIX (Tournefort.) Linnaeus. Syst., ed. i, 1735. 
Salix amygdalaefolia Lx. Cret. and Tert. FL, p. 156, pi. xxxi, f. 1, 2, 
1883. 
Green River group : Florissant, Colorado. 
Miocene: John Day Valley, Oregon. 
