118 BULLETIN r)3, UNITED STATES NATIONAL MUSEUM. 



643. Betula beatriciana L,esquereux. Types. 



745. Dakota (Cret.). Near Beatrice, Nebraska. 



Lesquereux, Amer. Journ. Sci., XLVI, 1S68, p. 95; Rept. U. S. 

 Geol. Surv. Terr., VI, Pt. I, 1874, p. 61, pi. 5, fig.5; pL 30, fig. 4. 



8485. Betula bendirei Knowlton. Type. 



Upper Eocene (Tert.). Bridge Creek, Crook County, 

 Oregon. 



Knowlton, Bull. No. 204, IT. S. Geol. Surv., 1902, p. 40, ])1. 4, fig. 2. 



159. Betula caudata Goeppert. Types. 



160. Laramie? (Cret.). Evan.ston, Wj'oming. 



Lesquereux, Ann. Rept. U. S. Geol. Surv. Terr., 1S71 [1872], p. 293. 



= Betula .ste vensoni . 



See Betula goepperti and Alnus aniericana. 



5366. Betula coryloides Ward. Type. 



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

 Montana. 



Ward, Bull. No. 37, U. vS. Geol. Surv., 1887, p. 31, pi. 14, fig. 3. 



8535. Betula? day ana Knowlton. I'ype. 



Mascall beds, Miocene (Tert.). Twelve miles west of 

 Mount Vernon, Grant County, Oregon. 



Knowlton, Bull. No. 204, U. S. Geol. vSurv., 1902, p. 41, ]>]. 4, fig. 4. 



1670. Betula florissanti Lesquereux. Type. 



Green River (Tert.). Flori.ssant, Colorado. 



Lesquereux, Rept. U. S. Geol. Surv. Terr., VIII, Pt. Ill, 1883, p. 

 150, pi. 27, fig. II. 



159. Betula goepperti Lesquereux. Types. 



160. Laramie? (Cret.). Evanston, Wyoming. 



Lesquereux, Rept. U. S. Geol. Surv. Terr., VII, Pt. II, 1878, p. 138, 

 pi. 17, figs. 22, 23. 



= Betula stevensoni. 



See Betula caudata (?) and Alnus americana. 



1 58. Betula gracilis ? Ludwig. Illustrated specimen. 



Denver (Cret.). Golden, Colorado. 



Lesquereux, Rept. U. S. Geol. vSurv. Terr., VII, Pt. II, 1878, p. 138, 

 pi. 17, fig. 20. 



7058b. Betula heterodonta Newberry. • Types. 



7071 Upper Eocene (Tert.). Bridge Creek, Crook County, 



to Oregon. 



7073- Newberry, Proc. U. S. Nat. Mus., V, 1883, p. 508; Mon. XXXV, 



U. S. Geol. Surv., 1898, p. 64, pi. 44, figs. 1-3; pi. 45, fig. 6. 



7047. Betula heteromorpha Knowlton. Types. 



7052. Upper Eocene (Tert.). Bridge Creek, Crook County, 



7060. Oregon. 



Knowlton, Bull. No. 204, U. vS. Geol. Surv., 1902, p. 39. 



See Populus polymorpha. 



