48 CATALOGUE OF THE CRETACEOUS AND [bull. 152. 
BERBERIS (Tournefort) Linnaeus. Gen., ed. i, p. 94, 1737. 
Berberis simplex Newby. Proc. U. S. Nat. Mus., vol. v, p. 514, 1882 
[1883]. 
Miocene ? : Bridge Creek, Oregon. 
BERCHEMIA Necker. Elem., vol. ii, p. 122, 1790. 
Berchemia multinervis (Al. Br.) Heer. Fl. Tert. Helv., vol. iii, p. 77, 
pi. cxxiii, f. 9-18, 1859 ; Lx., Tert. FL, p. 277, pi. Iii, f. 9, 10, 1878 • Ward, 
Bull. U. S. Geol. Siirv. no. 37, p. 73, pi. xxxiii, f. 1 [non f. 2], 1887. 
Rhamnus multinervis Al. Br. In Buckl. Geol., vol. i, p. 513, 1836. 
Berchemia parviflora Lx. Am. Journ. Sci., vol xlv., 2d ser., p. 207, 1868. 
Fort Union group: Bull Mountains, Montana. 
Denver group: Golden, Sedalia, Colorado. 
Laramie group : Eaton Mountains, New Mexico 1 
Miocene: John Day Valley, Oregon. 
Berchemia multinervis (Al. Br.) Ward=Bhamnus goldianus. 
Berchemia parvifolia Lx.=Berchemia multinervis. 
BETULA (Tournefort) Linna?us. Syst., ed. i, 1735. 
Betula aequalis L. Mem. Mus. Comp. ZooL, vol. vi, no. 2, p. 2., pi. i, f. 
2-4, 1878. 
Miocene: Chalk Bluffs, California. 
Betula alaskana Lx. Proc. U. S . Nat. Mus., vol. v, p. 446, pi. vi, £ 14, 
1882 [1883]. 
Eocene?: Chignik Bay, Alaska. 
Betula angustifolia Newby. Proc. TJ. S. Nat. Mus., vol. v, p. 508, 1882 
[1883]. 
Miocene?: Bridge Creek, Oregon. 
Betula basiserrata Ward, Bull. U. S. Geol. Surv. no. 37.p. 32, pi. xiv, 
f. 4, 1887. 
Fort Union group: Seven Mile Creek, Montana. 
Betula beatriciana Lx. Am. Journ. Sci., vol. xlvi, p. 95, 1868. 
Dakota group : Beatrice, Nebraska. 
Betula caudata Gopp. Lx.=Betula Stevensoni Lx. 
Betula coryloides Ward. Bull. U. S. Geol. Surv. no. 37, p. 31, pi. xiv, 
f. 3, 1887. 
Fort Union group: Seven Mile Creek, Montana. 
Betula elliptica Sap. Climat et Veg. Tert., p. 160, 1861 ; Lx., Cret. 
and Tert. FL, p. 242, pi. Ii, f. 6, 1883. 
Miocene : John Day Valley, Oregon. 
Betula fallax Lx. Bull. Mus. Comp. ZooL, vol. xvi, p. 45, 1888. 
Denver group: Golden, Colorado. 
Betula florissanti Lx. Cret, and Tert. Fl., p. 150, pi. xxvii, f. 11, 1883. 
Green Kiver group : Florissant, Colorado. 
Betula Gopperti Lx. — Betula Stevensonii. 
Betula gracilis? Ludw. Paleontogr., vol. viii, p. 99, pi. xxxii, f. 3-6, 
1801; Lx., Ann. Eept. U. S. Geol. and Geogr. Surv. Terr., p. 397, 1873 
[1874] j Tert, FL, p. 138, pi. xvii, f. 20, 1878. 
Denver group: Golden, Colorado, 
