DESCRIPTION OF SPECIES. 165 



Ajipelophyllum ovattm Lesq. 



Cret. and Tert. Fl., p. 69 ; Hayden's Ann. Kept., 1874, p. 355. 

 Celtis ? ovata Lesq., Cret. Fl., p. 66, PI. iv, Figs. 2, .3. 



Order RHAMNE^. 

 Tribe ZIZYPHE^^. 



PALIlTRrS CRETACEXIS, Sp. HOV. 



PI. XXXV, Fig. 3. 



Leaves subcoriaceous, broadly rlioraboidal, rounded, undulate above, 

 narrowed to the base, triplenerved; lateral primaries basilar, oblique, 

 straight to near the apex, with few branches; secondaries, two pairs, alter- 

 nate, open at a great distance from the base. 



The leaf, which is 5"" long and 4'™ broad, is undulate from the middle 

 upward, cuneate to the base, with the median nerve a little stronger than 

 the lateral ones, which ascend to the borders at an angle of 20° from the 

 median nerve. The relation of this species is with P. affinis Heer (Fl. Foss. 

 Arct., vol. 7, p. 42, PI. lxii, Figs. 16-lf'). Heer's Fig. 16 (loc. cit.), repre- 

 sents a leaf froni Patoot which is finely preserved wnth its petiole. The 

 leaf from the Dakota Group differs from it by the more enlarged obtuse 

 shape, and the less numerous branches of the lateral primaries. 



Habitat: Ten miles northeast of Delphos, Kansas. No. 4079 of the 

 collection of Mr. R. D. Lacoe. 



Paliurus obovatus, sp. nov. 

 PI. XXXV, Fig. 6. 



Leaves coriaceous, entire, o])ovate, rounded at apex, naiTOwly wedge- 

 form to the base, triplenerved, median nerve slightly thicker than the lateral 

 ones, ex current into a short mucro; lateral primaries straight, oblique, 

 ascending to near the apex, with few branches; one of the secondaries only 

 vi-sible, short, cm-ved. 



The leaf is 4"™ long and 4'^'" broad above the middle. It is as yet with- 

 out any known relation. As in the following species the primaries have 

 scarcely anv branches and the place of the secondaries is indicated near 

 the apex by a single, short, curved one. From the nervation onh' the leaf 

 is comparable to P. tenuifol'ms Heer^ of the' Miocene, which has small oval 



' Fl. Tert. Helv., vol 3, p. 76, PI. cxxil, Fig. 31. 



