94 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



1 615. Adiantites gracillimus Lesquereux. Type. 



Green River (Tert.). Florissant, Colorado. 



Lesquereux, Rept. U. S. Geol. Surv. Terr., VIII, 1883, p. 137, pi. 21, 

 fig. 8. 



30087. ./Esculus arctica Knowlton. Type. 



Eocene (Tert.). Kukak Bay, Alaska. 



Knowlton, Harriman Alaska Exped., IV, 1904, p. 155, pi. 30. 



8519. ./Esculus simulata Knowlton. Types. 



8520. Mascall beds, Miocene (Tert.). Twelve miles west of Mt. 



Vernon, Grant County, Oregon. 



Knowlton, Bull. No. 204, U. S. Geol. Surv. iqo2, p. 78, pi. 15, 

 figs. 1, 2. 



1586. Ailanthus longe-petiolata Lesquereux. Types. 



1587. Green River (Tert.). Uinta County, Wyoming, northeast 



of Randolph, Utah. 



Lesquereux, Rept. U. S. Geol. Surv. Terr., VIII, 1883, p. 197, pi. 

 40, figs. 6, 7. 



8228. Albertia latifolia Emmons. Type. 



Triassic. Lockville, Chatham County, North Carolina. 

 Emmons, Am. Geology, VI, 1857, p. 126, fig. 95. 

 = Otozamites carolinensis. 



13066. Alethopteris ambigua Lesquereux.' Types. 



13067. Cherokee, Des Moines (Penn.). Clinton, Henry County, 

 30855. Missouri, and Cannelton, Pennsylvania. 



Lesquereux, Coal Flora, Second Geol. Surv. Pa., Rept. Prog. P, 

 Atlas, 1879, p. 6, pi. 31, figs. 1, ia, 2, 3; Text, I, 1880, p. 182. 



3590. Alethopteris ambigua Lesquereux. Illustrated specimen. 



5634. Lower Coal Measures (Penn.). Pitcher's and Owen's Coal 



Mines, Henry County, Missouri. 



White, Mon. XXXVII, U. S. Geol. Surv., 1899, p. 113, pi. 37, figs. 

 3, 4; pi. 41, fig. 9. 



12244. Alethopteris crassa Lesquereux. Type. 



Allegheny (Penn.). Cannelton, Pennsylvania. 



Lesquereux, Coal Flora, Second Geol. Surv. Pa., Rept. Prog. P, 

 Text, III, 1S84, p. 748, pi. 98, figs. 5, 5a. 



1 1886. Alethopteris evansii Lesquereux. Types, 



to Walden (Penn.). Tracy City and Rockwood, Tennessee. 



1 1890. 



Lesquereux, Coal Flora, Second Geol. Surv. Pa., Rept. Prog. P, 

 Text, III, 1884, p. 834. 



1 1964. Alethopteris gibsoni Lesquereux. Type. 



Pennsylvanian. Danville, Illinois. 



Lesquereux, Coal Flora, Second Geol. Surv. Pa., Rept. Prog. P, 

 Atlas, 1879, p. 6, pi. 28, fig. 4; Text, I, 1880, p. 183. 



12092. Alethopteris helenae Lesquereux. Type. 



Pottsville (Penn.). Helena, Alabama. 



Lesquereux, Coal Flora, Second Geol. Surv. Pa., Rept. Prog. P 

 Text, I, 1880, p. 179. 



