DESCKIPTION OF SPECIES— ROAMNE.^. 277 



Z 9 z }' p li II S <■ ■ " " SI III o III o i «l <* s , Lesqx. 

 riato LII, Figs. 7,8. 



Cranolhus cinnamomoidea, Lesqx., Annual Report, 1871, p. 289. 



Leaves nipmliranaccons, obloii',', narrowly cuneato to the base, obtusely distantly dentate below 

 the middle upward; ni^rvation tritid. 



Tlu; relation of these two tVagiiieuts of leaves, whose upper part is de- 

 stroyed, is with Cemtothvs zizyphoides, Uiig.,as descrilfcd aiidlignred l)y IJeer 

 (Fl. Tert. IIclv., iii, p. 74, pi. e\.\ii, fig. 25) under the name o^ Zhyphus Ungeri. 

 V,n\ they differ evidently by the primary lateral vein.s, which, shorter, ascend to 

 above the middle, where they anastomose with branches of the midrib. In 

 Unger's species, the midrib is simple and the lateral nerves aerodrome. The 

 details of nervation are quite dislinctand as figured, being formed by subdivi- 

 sions of the nervilles, nearly in right angle, of small eciuilateral or <piadrate 

 meshes. The borders are obtusely toothed rather than erenate; the teeth 

 do not appear to be entered by the l)ranches, but only by nervilles. 



Habitat. — Green River Station, "Wyoming, above the fit-h-beds, with 

 Ampelopsls tertiar'ia, etc. (/>/'. F. V. Hafidrii). 



BEKCHEMIA, Keck. 

 It o ■■ c It o III i n lu II 1 1 i II « r V i s , Al. Br. 



Plate LII, Figs. 9, 10. 



Bcrchatiia niNlliiierrh, Heer, Fl. Tert. Helv., p. 77, pi. cxiii, fig.s. 9-18.— Sisni., Pro«l., p. 1.'); Mater., p. <;i, 

 pi. sxi.K, fig. 8.— Sap., El, iii, p. 107, pi. xii, figs. 2, 3.— Ett., Foss. Vh v. Bit., iii, p. 41, pi. 

 xlix, lig.s. 15-17. 



Hhamuii.i mitllinerri.i, Al. Br., in Buckl. Geol., p. 5K!. 



J^araiiwlMi miillitierris, Al. Br., iu Leonb. and Bronn, Jabrb., 1845, p. 172.— Ung., Clilor. Protog., p. 147, 

 pi. 1, lig. 4. 



Earwlnnldii (i:iiiiiijeiinit,M. Br., in BrnclvUi. Verz., p. 2:V2. 



Jierchemia jMrtifolia, Les(ix., Annual Keport, is(i9, p. liXJ; Supplement to Annual Report, 1871, p. 15. 



Leaves ovate-obtuse, rounded to the petiole; border.s very entire; lateral nerves numerous, eloso, 

 parallel, slightly curved, subopposite, simple, camptodrcme; nervilles elose, numerous, distiiiet, simi)le 

 or braneliing. 



I remarked in the last memoir quoted above that the iiume given to the 

 first leaf (fig. 9), communicated by Dr. J. L«'conte from Raton Pass, was 

 not appropriate, a.s a new specimen had been sent from the Raton Lignitic, 

 with a leaf" as large as those of our common B. voluhUis, to which the fo.ssil 

 species is closely related. 1 then remarked also that the American form 

 merely differed from that of tlie European Miocene, as represented by Heer 

 (Joe. cii.), by the secondary nerves being open from the midrib, while they 

 are slightly turned downward at their point of contact in the figures given 

 by this author. But other leaves, represented l)y .Saporta, d'P^ttingshausen, 



