DESCRIPTIONS OF SPECIES. 49 



Subclass DICOTYLEDONS. 



Series I. CHORIPETAL^. 

 Order SALICALES. 

 Family SALICACE^. 



Populus harkeriana Lesquereux. 



PL VII, fig. 31. 



Populus harlceriana Lesq., Mon. U. S. Geol. Survey, vol. 17 (Fl. Dak. Gr.), 1892, p. 44, pi. 46, fig. 4; Hollick, 

 Annals New York Acad. Sci., vol. 11, 1898, p. 419, pi. 36, fig. 8. 



I was at first inclined to question the positive identification of this specimen, on 

 account of the uncertainty in regard to the character of the margin throughout. 

 The portion which is preserved, however, as well as the other features of form and 

 nervation, seems to leave but little doubt in regard to its identity. 



Locality: Tottenville, Staten Island. Collected by Arthur Hollick. Specimen 

 in Mus. Staten Island Assn. Arts and Sci. 



Populus? apiculata Newberry. 



PL VII, figs. 28, 29. 



Populus? apiculata Newb., Mon. U. S. Geol. Survey, vol. 26 (FL Amboy Clays), 1895 (1896), p. 65, pi. 15, figs. 

 3, 4; Hollick, Trans. New York Acad. Sci., vol. 12, 1892, p. 31, pi. 3, fig. 2. 



The identity of our fig. 28 with this species may be questioned, on account of its 

 fragmentary character, but fig. 29 presents all of the essential features of the species, 

 which heretofore was not definitely known to occur elsewhere than in the Cretaceous 

 of New Jersey. 



Locality: Arrochar, Staten Island, PI. VII, fig. 28. Collected by Gilman S. 

 Stanton. Specimen in Mus. Staten Island Assn. Arts and Sci. 



Glen Cove, Long Island, PL VII, fig. 29. Collected by David White. Speci- 

 men in U. S. Nat. Mus. 



Populus stygia Heer? 



PL VII, fig. 30. 

 Populus stygia Heer, Fl. Foss. Arct., vol. 3 (Kreide-FL), 1874, p. 107, pi. 29, fig. 10. 



This specimen, on account of its fragmentary character, must necessarily be 

 referred with a query to Heer's species, although it matches it almost exactly. In 

 both figures only the base of the leaf is preserved, and it must be admitted that this 

 is indicative of a Liriodendron even more than it is of a Populus, and if it were not 

 for the apparent identity with Heer's figure I should be inclined to regard it as belong- 

 ing to the former genus and to compare it with L. oblongifolium Newb. a 



Locality: Gay Head, Marthas Vineyard. Collected by David White. Specimen 

 in U. S. Nat. Mus. 



a Mon. U. S. Geol. Survey, vol. 26 (Fl. Amboy Clays), pi. 52, figs. 1-5. 

 MON L 06 4 



