DESCHirriON OF SPECIES. 159 



stout ;iucl bruad; secondaries at an open angle of divergence, distinctly 

 caiiiptodi'ome and curved in traversing the lamina. The species is closely 

 allied to S. ap/riihttns Velen. (Fl. l)o]un. Kreide., pt. 3, PI. vii, Figs. 1-8). 



Habitat: Ellsworth County, Kansas. No. 721 of the collection of Mr. 

 R. D. Lacoe. 



Order AMPELIDACEiE. 



Tribe AMPELIDE^<E. 



CiSSITES INGENS, Sp. IIOV. 



PI. XIX, Figs. 2, 2a. 



Leaves large, palmately deeply tri-tive lobate; lateral lolies broad, 

 lobateaud dentate; the median short, enlarged above, simply dentate; divis- 

 ions acute; primary nerves, three or tive, thick, the lateral forking near the 

 base or branching above into tliinner tertiaries, all the divisions ascending 

 to the teeth. 



Some of the leaves, as seen from the fragment (Fig. 2a), which is only 

 a lateral lobe, were at least 28'™ to SO"™ in width between the extremities of 

 tlie lateral lobes. The smaller leaf (Fig. 2), preserved entire, ditfers in the 

 lateral primaries joining the petiole by their base and not forking al)ove it 



The species is of the same type as C. fonnosiis Heer, described below, 

 C. insinnis Heer^ and C. pwilasokemis Heer'^ described from Puilasok, a 

 Miocene stage. It has also a degree of relation to Cksus vitifolia Velen.' 



Of these species it diiTers essentially in the size and the acute form of 

 the divisions or teeth of the leaves and bv the position of the lateral pi-i- 

 maries near the basal border of the leaves, which in all those descril)ed b^- 

 Heer join the median nerve at right angles as in C. formusm (PI. XXI, Fig. 5). 



This character was apparently the same in the large fragment which is 

 represented in Fig. 2a, the lateral i)rimaries l)ranching above their points of 

 iniion to the median nerve and joining it above its base. 



Habitat: Ellsworth County, Kansas. No. 591 of the collection of the 

 University of Kansas; E. P. West, collector. No. 2737 of the U. S. National 

 Museum. 



'Phyll. Cr<;t. dii N^br., p. 19, PI. Ii, Figs. 3, 4. 

 -'Fl. Foss. Arct., vol. 7, p. 119, PI. cvii, Figs. 8-10. 

 3F1. bohm. Kreide., pt. 3, PI. ii, Fig. 6. 



