730 GhX)L()GY OF THE YELLOWSTONE NATIONAL PAEK. 



This species iippears quite unlike any species before found in America, 

 l)ut is not g-reatlv unlike A wicrophijlla Heer from the Swiss Tertiary. The 

 latter species is not (piite as broad as ^-i. macrospcniKi, and has not the end 

 preserved. The seeds are aliont the same size in both. 



Habitat: Fossil Forest Kido-e, bed No. 7, "Castanea bed;" collected 

 by Ward and Knowlton, Au<inst IG-'iO, 18S7. 



Acacia la.marensis n. sp. 

 PI. XGVIII, tig-. C. 



Leo-ume linear, liroad, more than 7 cm. lon^-, and 1.7 cm. broad: end 

 pointed; apparently with maryinal wing 2 or 3 mm. wide; seeds oval, 10 

 mm. long, 8 nun. wide. 



This may possibly be the same as A. macrospcrma, h\\\ it appears to 

 differ essentialh' in being narrower and in having an acuminate instead of 

 an obtuse termination. The apparent wing and the seeds are much the 

 same in both. 



Habitat: Lamar River, between Cache and (Jalfee creeks; collected by 

 Knowlton and Culver, August 21, 188s. 



Acacia wardii n. sp. 

 PI. XCVIIl, tig. 7. 



Legume narrow, linear, constricted, (i cm. long, mm. wide in the 

 broadest portion and 5 mm. wide at the constricteil point: point of attach- 

 ment reduced to a slight extension, opposite extremit}' with a decided curved 

 beak; seeds apparently })resent, but obscure. 



This species differs markedly from the others just described, and also, so 

 far as I know, from any heretofore found. 



Habitat: Fossil Forest Eidge, bed No. 4, "Aralia bed;" collected by 

 Ward and Knowlton, August l(;-20, 18S7. 



Leguminosites lesquereuxiana Kn. 



PI. LXXXIX, tig. 4. 



Lenuminosites lenqiiercii.vidiia Kn. : Bull. IT. S. Geol. Surv. No. l.VJ, 131, 1898. 

 Leguminosites cassioidcx Lx.: Tert. FL, p. 300, PI. LIX, tigs. 1-4. 



Habitat: Northeast side of Crescent Hill o^iposite small pond; col- 

 lected liy F. H. Knowlton and CI. E. Culver, August 2, 1888. 



