730 GEOLOGY OF THE YELLOWSTONE NATIONAL PARK. 



This species appears quite unlike auy species before found in America, 

 but is not greatly unlike A. mkrophyUa Heer from the Swiss Tertiary. The 

 latter species is not quite as broad as A. macrosperma, and has not the end 

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



Habitat: Fossil Forest Ridge, bed No. 7, "Castanea bed;" collected 

 by Ward and Knowlton, August 16-20, 1887. 



Acacia lamakensis n. sp. 

 Pi. xcvm, tig. <;. 



Legume linear, broad, more than 7 cm. long, and 1.7 cm. broad; end 

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

 mm. long, 8 mm. wide. 



This may possibly be the same as A. macrosperma, but it appears to 

 differ essentially 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 Calfee creeks; collected by 

 Knowlton and Culver, August 21, 1888. 



Acacia wardii n. sp. 

 PI. XCVI11, fig. 7. 



Legume narrow, linear, constricted, 13 cm. long, 9 mm. wide in the 

 broadest portion and 5 mm. wide at the constricted point; point of attach- 

 ment reduced to a slight extension, opposite extremity with a decided curved 

 beak; seeds apparently present, 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 Ridge, bed No. 4, "Aralia bed;" collected by 

 Ward and Knowlton, August 16-20, 1887. 



Leguminosites lesquereuxiana Kn. 



PI. LXXXIX, fig. 4. 



Leguminosites lesquereuxiana Kn. : Bull. U. S. Geol. Surv. No. 152, 131, 1898. 

 Legaminosites cassioides Lx. : Tert. PL, p. 300, PI. LIX, figs. 1-1. 



Habitat: Northeast side of Crescent Hill opposite small pond; col- 

 lected by F. H. Knowlton and Gr. F. Culver, August 2, 1888. 



