ITRTICALES. 



193 



species differs iii its general form, lieiiig widest, 

 and entire proximad; in its much extended and 

 narrow apex, witli relatively largiu- produced 

 teeth; and in its minute isodiametric arcoles. 



The jirescnt species is less conunon than tlie 

 preceding AVilcox species of l)ry(i|iliyllina. 



The larger leaves of Ih-i/fjphi/llinii jutrj/cann- 

 si.s are closely simulatetl in appearance' hy tlie 

 associated leaves of Dn/op/n/lhim (itionutluin 

 Berry, which, however, can he readily distin- 

 guished l)y their thin and in\arial)ly cainpto- 

 (Ironie secondaries. The snuiUe.r leaves ai'c 

 nuicli lik(^ the French Ypresian species Vrija- 

 ]iJiijlhnii cuiilcdlcnse (Wateh^t) Saporta and 

 Marion ' and the French Thanetiau species 

 Mi/rica roginei Watelet.- The leaves of Mijrica 

 roii'intl are also much like Qufrcus linearii^ 

 Knowlton of the Raton formation of tlie south- 

 ern Rocky Mountain ]irovince. 



Occurrence. — Grenaihi formation, Grenada, 

 Greiuida County, Miss, (collected liy E. W. 

 BerrjO- Lagrange formation (in beds of Wil- 

 cox age), Puryear, Henry County, Tenn. (col- 

 lected by E. W. Berry), and Wicivlilfe (No. 

 2571), Bidlard County, Ky. (collected by R. H. 

 Loughridge). 



Collections. — U. S. National Museum. 



Dryophyllum amplum Berry, n. sp. 



Plate CXVII, figures 1-4. 



Description. — Leaves large, lanceolate in gen- 

 eral outline, with an acuminate apex and a 

 cuncate base. Length ranges from 20 to 30 

 centimetei's. Maximum width, in the middle 

 part of the leaf, ranges from 5 to 7 centimetei's. 

 Texture coriaceous. Margms cntu"e m the basal 

 fourth of the leaf, above which they are beset 

 with widely s]>aced, prominent, afjuiliiie-ser- 

 rate teeth, one at the termination of each 

 secondary vein. The petiole is missing in all 

 tlie specimens. The midrib is stout and preem- 

 inent on the lower surf'ace of the leaf. Sec- 

 ondaries stout, regularly and widely spaced, 

 about a dozen pairs, varying from alternate to 

 opposite, craspedodrome; they diverge from 

 the midrib at angles of 50° to 60°, pursue a 

 nearly straight ascending com'se, and terminate 

 in the marginal t(>eth. Tertiary venat ion very 

 thhi, forming a fine anguhir mesli, with no 



1 Watelet, A., Description des plantes fossiles du bassin de Paris, p. 127, 

 pi. 34, flgs. 1-3, 1860. 

 ndcm, p. 127, pi. 33, figs. 10, 11. 



50243°— 16 13 



differentiation between neinnlles and the ulti- 

 malo areolation. In the teeth straight t(>r- 

 tiarics run (Hrectly to the margin and there is 

 no inti-aiiiarginal series of arches as tliere usu- 

 ally is in Castanca or (Jiuu'cus. 



This large and characteristic spi>cies is com- 

 mon in I lie clay ironstone in the vicinity of 

 Naborton. It is larger than the leaves of any 

 of tlie Wilcox species of Dryophyllum except 

 occasional leaves of Dryopliyllurn itioorll (Les- 

 riucreux), which is ndatively shorter and 

 broader and has more numerous secondaries 

 and very feeble niarghial teeth. None of the 

 other Wilcox forms lias nearly so prominent 

 or aquiline teetli as Drijoj)]iijllum amplum^ the 

 only one with large teeth being the narrow 

 form Drijiijih>jlliiiii (iiiomalum, m which they 

 are different in shape and the secondaries are 

 thin and camptoilrome. Among foreign spe- 

 cies Dri/oj)]i ijllitm devxilquei Saport a and Marion'' 

 from the Heersian (Thanetian) of Belgium is 

 perhaps most similar to the present form. 



Occurrence.— ^\N . \ sec. 9 and SE. \ NE. \ 

 sec. 13, T. 12 N., R. 12 W., near Naborton, 

 De Soto Parish, La. (collected l)y G. C. Matson 

 and O. B. Hopkins). 



Collections. — U. S. National Museum. 



Order UHTICALES. 



Family TTLMACEai. 



Genu.s PLANERA J. F. Gmelin. 



Pl.ANERA CRENATA NowbeiTV ( ?) . 



riniura rrniata. Xewlierry, U. S. Nat. Mus. Proc, vol. 

 5. p. 508, 1882. 

 Newberry, U. S. Geol. Siu'vey Mon. 35, p. 81, pi. 57, 

 fig. 3. 1898. 



Description. — Newberry gave the following 

 description in 1882: 



Leaves oblong, ovate; short petioled; 5 centimeter.s long 

 by 25 millimeters wide; base rounded; summit blunt- 

 pointed; margins coarsely crenate; nervation simple, deli- 

 cate, six simple branches on each side of the midrib ter- 

 minating in the crenations of the margin. 



This species was described by Newberry from 

 a]")i)arently scanty material collected by Hay- 

 den from the Eocene of Tongue River, Mont. 

 Only a single specimen was figured. A single 

 inip(M-f<H't loaf from the Grenada formation 

 reseni])les this species more closely than it 

 does any other described form. It is the same 



3 Saporla, G. de, and Marion, A. F., op. cit. 



