188 KANSAS UNIVERSITY QUARTERLY. 



scarcely, or not at all lobed, lowest pair much reduced, li 

 cm. long, reflexed. Lobes more distinct on the lower side of 

 the pinna than on the upper, true at least of those pinna' ap- 

 proaching the base of the frond. First lobe on the lower side 

 of each pinna attached to the main rachis. Midvein of the 

 pinna broad, but sh allows marked on the upper side of the frond 

 by a shallow furrow^, continuing to near the apex, curved down 

 at its union with the rachis. Lateral veins entirely obscured 

 by the coriaceous frond. 



The propriety of including this species in the genus Glenop- 

 teris is extremely doubtful. With the single incomplete speci- 

 men at hand, it is difficult to decide its true generic relation. 

 In general disposition the frond is much like that of other large 

 species of Gltnopttrls, a frond having a strong striate rachis 

 with pinnules reduced at the base. The negative character of 

 obscured venation may not be of especial value, since the vena- 

 tion of every species of the genus is more or less obscured, and 

 additional specimens, when found, may have the venation pre- 

 served. The pinna^, however, are very different. They can 

 hardly be said to be auricled. They are rather sessile by the 

 entire base, the borders lobate, the first lobe on the lower side 

 attached to the rachis. But as observed in other species of the 

 genus, the pinnie of the middle of the frond may prove to be 

 more distinctly auricled. The first large pinna at the base of 

 the frond has only a single lobe on the lower side ; the two fol- 

 lowing are distinctly lobed on the lower side, merely undulate, 

 or slightly lobed, on the upper; the next two above these are 

 broken ; the third, the large pinna at the top of the specimen, is 

 as plainly lobed on the upper as on the under side. 



This species, as noted in the discussion of the genus, ap- 

 proaches very closely to Lomatopteris Sch. As in that genus, the 

 veins are obscured, fronds thick, petiolate, rachis strong and 

 striate, pinn;p lolled. The absence of a thickened border is 

 the essential character excluding this species from Schimper's 

 genus. 



Lomatopterii<hurgon<lioca Sap., from the .Jurassic, should be com- 

 pared as a species closely related in its form and development. 



Doctor White has very kindly looked over the photographs 

 illustrating this genus, and calls attention to the close resem- 

 blance of some of its species, especially Glenoptcrisf lohata to 



