SYSTEMATIC DESCRIPTIONS. 



15 



cxtromo l)aso, curving ii])Wiir(l su])])aral]<'l with 

 the midrib and the hitoral iiiarij;ijis of ll\c Iraf- 

 lets, eventually inoscidatiiifj with ilic ihiu 

 cain]itodroiU(^ secondaries from the upper part 

 of the miih-ih. On their outer siile the lateral 

 primaries each ii;ive off tliree or four fairly stout 

 (•ampto(h'ome secondaries, tlie hasal one of 

 which as a ride (hveri^es a„ the extreme base, 

 giving the leaflets tlie appi-arance of havmg 

 liv(^ primaries. Tertiaries mostly o])S(dete. 



Tliis species is uiifortunat-ely based ou ii few 

 incomplete specimens whicli obviously rej)re- 

 sent leaflets of some trifoUatic-leafed Miilway 

 representative of the Pa|)iliouacea'. Several 

 existing genera of this family furnish material 

 with which to com])ai'e tlu^ fossds. Among 

 these genera Dolichos Limie offers many points 

 of similarity, which leads nw to refer this new 

 form to the genus Dolichites, established by 

 Unger in 1850, for leaves and pods that resem- 

 ble those of the living genus Dolichos, whicli 

 contams about 30 species, mostly found in the 

 Tropics of the Old World, thougli several live in 

 the American Ti'opics. Several species based 

 on both foliage and pods from the European 

 Tertiary have been i'"?rred to Dolichites. 



Dolichites deusseni may also l^e compared 

 with the leaflets of Eryfhrina arbona (Chap- 

 man) Small, a shrub or small tre(^ of the Florida 

 Keys. It also resembles somewhat the Wilcox 

 leaf referred to Cercis, but differs in venation 

 and certain minor distinctive characters. It 

 also suggests the Laramie and Denver forms 

 refeiTed by Lesc(uereux to the genus Dom- 

 beyopsis Unger of the famUy Sterculiacea;. 



Occurrence. — Midway ( ?) formation, Earle, 

 Bexar County, Tex. (collected by Alexander 

 Deussen). 



Collection. — U. S. National Museum. 



Order MYRTALES. 



Family COMBRETACE^. 



Genus TERMINALIA Linne. 



Terminalia hilgardiana (Les(piereux). 



riato III, figiiro 1. 



Magnolia hiUjardiana. Lesqucroiix, in Owen, D. D., 

 Second report of a geological reconnaissance of the 

 middle and southern couiilics of .\rkansas, p. 319, 

 pi. G, fig. 1, lS(iO. 

 Leaqiierenx, Am. Philos. Soc. Trans., vol. 13, p. 421, 

 pi. 20, fig. 1, 1809. 



l.cs(|uorcu.\, The Tertiary lloro, ]). 24i>, pi. 44, 1878. 

 Iliillick, in Harris, (J. 1). and N'calch, .\. (!., .\ pre- 

 liminary rcjiort on the geology of Loui.-iiana, j). 282, 

 pi. 3!(, 18!J!). 

 Knovvllon, in Lindgron, U. S. Cieol. Survey I'rof, 

 Paper 73, pp. GO, Ul, 1911. 

 Magnolia lauri/olia. Losquoreux, .\m. I'liilos. Soc. Trans., 

 vol. 13, p. 421, pi. 20, fig.s. 2, 3, l.SGO; U. S. Nat. 

 Mus. Proc, vol. 11, p. 2'), 1888. 

 Quercus Lgrllii. Lescjuereiix (not lleer), .\m. Pliilos. Soc. 

 Trans., vol. 13, p. 415 (part), pi. 17, fig. 3 (not figs. 

 1 and 2). 



Discriptlon. — Leaves medium to large, 

 oblong-ovate in general outlin(\ A])e\ not 

 preserved in any of the material. Base nar- 

 rowly or broacUy cuneate. Leiigth ranges 

 from 15 to 25 centimeters. Maximum width, 

 at or aliove the middle, ranges from 4 to 10 

 centimeters. Margins entire, more or less 

 irregularly imdulatiC. Leaf substance thin but 

 coriaceous. Only fragments of the petiole 

 jjreserved; it was evidently short antl very 

 stout. Midrib stout, more or less curved, 

 prominent on tlie lower surface of the leaf. 

 Secondaries relativ(dy thin, numerous, sub- 

 parall(d, aljout 20 rather regidarly spaced, op- 

 l)osite to alternate pairs. They diverge from 

 the midrib at angles of 40° to 70°, averaging 

 about 50°, curving slightly and regidarly. 

 Camptodrome close to the margins. 



The ty])e material of this species was col- 

 lected by llilgard from the Wilco.x at Hurleys, 

 Benton County, Miss., and first figured by Les- 

 quereux in the second Arkansas report. It 

 can not be foimd in the remains of the Hd- 

 gard collection at the University of Mississippi. 

 WTien Lesquereux came to describe and illus- 

 trate this material he differentiated two spe- 

 cies, although there is obviously only one form 

 represented. The species is abundant in the 

 Midway( *) of Texas, rather widespread in the 

 Wdcox, and occurs in the lower Eocene of 

 Fishers Peak, N. Mex. It has also l)e(>n re- 

 corded from the Fort L^nion formation of Mon- 

 tana and the Eocene of Lassen County, Cal. 



In the small collection from Earle that has 

 been available for study there are .ten frag- 

 mentary buli characteristic specimens of this 

 species. 



Occurrence. — Midway {'() formation, lOarle, 

 Be.xar County, Tex. (collected by Alexander 

 Deussen and L. W. Stephenson). 



Collection. — U. S. National Museum. 



