KNOWLTON] KOOTANIL PLANTS FROM GRFAT FALLS, MONTANA IOO, 



more than a "large edition'' of that species. As Seward has pointed 1 

 out, this species has a strong resemblance to Glcichenia zippci Heer 2 

 from the Lower Cretaceous of Greenland. In the absence of con- 

 clusive evidence, however, it seems best to keep it under the present 

 name. 



Locality. — Canon north side of Skull Butte, 6 miles southeast of 

 Stanford, Fergus County, Montana. 



CLADOPHLEBIS CONSTRICTA Fontaine 



Cladophlebis constricta Fontaine, Monog. U. S. Geol. Survey, No. 15, 

 1889, p. 68, pi. 11, figs. 11, 11a, lib; pi. in, fig. 2; pi. vi, figs. 5, 5a, 6, 

 6a, 8-14; pi. xxi, figs. 9, 13; pi. cexix, figs. 2, 2a; Fontaine in Ward, 

 Monog. U. S. Geol. Survey, No. 48, 1905 [1906], p. 297, pi. lxxi, fig. 26. 



A single characteristic and well preserved example. 

 Locality.— Meridith mine, 3 miles southeast of Nollars ranch and 

 6 miles southwest of Geyser, Cascade County, Montana. 



CLADOPHLEBIS FISHERI n. sp. 

 Plate XI, Figs. 2, 2a 



Outline of frond unknown, pinnas linear, evidently long, the rachis 

 very strong, with two or three minute ridges on the upper side ; 

 pinnse cut nearly to the rachis into relatively large opposite or sub- 

 opposite, triangular, subfalcate rather obtuse pinnules, with entire 

 or slightly undulate margins ; nervation very strong, consisting of 

 a thick midvein, which is zigzag and passes to the apex or forks 

 once or twice into nearly equal branches in the upper portion, with 

 four or five pairs of alternate, strong, remote veins on either side, 

 each of which forks once or twice in passing to the margin ; surface 

 between the veins showing minute pits or areolations. 



The example figured is the only one found in the collection, and 

 it is with some hesitation that I have decided to describe it as new 

 on such scanty material. It appears to approach most closely to 

 Cladophlebis virginiensis Font., 3 from the Lower Potomac of Vir- 

 ginia, from which it differs in having the pinnules shorter, much 

 broader and more obtuse, and the nervation apparently stronger. 

 It is possible that a larger series of specimens might show that these 

 differences break down, in which case it can be referred to the Vir- 

 ginia species. 



1 Op. cit., p. 100. 



2 F1. Foss. Arct, vol. 3, 1874, pis. v, vi, etc. 



3 Monog. U. S. Geol. Survey, No. 15, 1889, p. 70, pi. iy, figs. 1, 3-6. 



