KNOwi.TON.] DESCRIPTION" OF SPECIES. 87 



Phyllites person atus n. sp. 

 Plate XVI, tig. 4. 



Leaf evidently thick and leathery in texture, narrowly obovate- 

 laneeolate in shape, long, wedge-tshaped at base, aciuninate at apex; 

 margin perfectly entire; midri)) very thin, almost disappearing- above; 

 secondaries three or four pairs, very thin and o])scure, the two lower 

 pairs close together near the base of the blade, at an acute angle, pass- 

 ing up for a long distance, camptodrome and apparently joining the 

 one next above; nervilles obscure, apparentlv arising at an acute angle 

 from the secondaries and soon lost; finer nervation not satisfactorily 

 discernible. 



The single specimen figured is all I have seen of this form. It is a 

 small leaf, al)out 4. .5 cm. long and 1.5 cm. wide, being slightly obovate- 

 lanceolate in shape. From the faint impression of the nervation as 

 well as the wrinkled appearance it is inferred that the leaf was of 

 thick and leathery texture. 



Locality. — Cherry Creek, Crook County, Oregon. Collected by 

 Knowlton and Merriam, July, 1901 (U. S. Nat. Mus., No. 8554). 



SPECIES EXCLUDED FROM THIS WORK. 



A number of species that are not now recognized have, at one thne 

 or another, been referred to the various beds within the John Day 

 Basin. The reasons for excluding each are set forth in the following 

 list: 



Alnus corraUina Lesq., Cret. and Tert. FL, p. 243, PI. LI, figs. 1-3, 1883. The 

 original of fig. 1 is said by Lesquereux to be from "John Day Valley," Oregon." 

 This specimen is No. 1944 of the paleontological collection of the University of Cali- 

 fornia, and is from south of Mount Diablo, California, agreeing with others from the 

 same place, and being so marked on the back. 



Betula elHpiica Saporta. Lesq., Cret. and Tert. Fl., p. 242, PI. LI, fig. 6, 1883. Said 

 by Lesquereux to be from "John Day Valley, Oregon." It is No. 1760 of the paleon- 

 tological collection of the University of California, and is from south of Mount Diablo, 

 California. 



Betuki parcc-deritaia Lesq., Cret. and Tert. Fl., p. 242, PI. L, fig. 12, 1883. Said by 

 Lesquereux to be from "John Day Valley, Oregon." It is from south of Mount 

 Diablo, California, and is No. 1955 of the paleontological collection of the University 

 of California. 



Berchemia multmervts (Al^ Br.) Heer. Lesquereux, Proc. U. S. Nat. Mus., Vol. XI, 

 p. 16, 1888. Not found in the collection of the United States National Museum. 

 Omitted for lack of evidence. 



Populvs (jhmduUfera Heer. Lesquereux, Proc. U. S. Nat. Mus., Vol. XI, p. 18, 1888. 

 A single broken example that it is impossible to identify. 



Quercus loncJdtiH Unger. Lesquereux, Proc. U. S. Nat. Mus., Vol. XI, p. 22, 1888. 

 Much broken and impossible of identification. 



Quercus f rax inifolia Lesq., op. cit., p. 22. Discarded for same reasons as the last. 



Quercus Olafseni Heer. Lesquereux, op. cit., p. 22. liejected for the same reason 

 as the last two. 



