456 rROCEEDINGS OF THE NATIONAL MUSEUM. vol. 51. 



nerves emerge at an angle of about 45, curve slightly in passing out- 

 ward, and are often forked. There is also some evidence that the 

 nerves may anastomose, but the leaf is so thick and leathery tliut 

 this point is obscured. 



The generic reference is somewhat uncertain, but in all reasonable 

 probabihty it belongs to Sagenopteris. It is quite unlike the species 

 just described, but does resemble a nimiber of well-known forms. 

 It has been thought best, however, considering its fragmentary 

 nature, not to give it a specific name. 



Occurrence. — 6700. Upper Matanuska Valley, Alaska. Crest of 

 spur between first and second tributaries entering East Fork of 

 Boulder Creek above its mouth. Elevation, 4,780 feet. 



OTOZAMITES PTEROPHYLLOIDES Brongniart. 



Plate 79. 



Otozamites pterophylloides Brongniart MSS., Schimper, Pal. Veg., vol. 2, 1870, 

 p. 173.— Saporta, Plants Jurassique, vol. 2, 1875, p. 152, pi. 104, figs. 1,2; 

 pi. 105; pi. 106, figs. 1, 2; pi. 107; pi. 108, fig. 1; pi. 110, fig. 3.— Bartolin, 

 Nogle i den bornholmske Juraformation forekommende Planteforsteninger, 

 Bot. Tidsskr., vol. 19, 1894, p. 94, pi. 2, fig. 7.— Moller, Bidrag till Born- 

 holms fossila flora, Gymnospermer, Kongl. Svenska Vetenskaps-Ak. Ilandl., 

 vol. 36, 1903, p. 13, pi. 1, fig. 19; pi. 3, fig. 1; pi. 7, fig. 15. 



This species is represented by several examples, the largest and best 

 being the one figured. In size and shape of the leaflets it appears to 

 agree most closely with several of the figures given by Saporta in his 

 Plants Jurassique,^ being if anytliing shghtly larger than the French 

 specimens. The examples referred to this species by Moller have the 

 leaflets narrower and more acute than the Matanuska specimens, but 

 the nervation is apparently the same in both. 



Occurrence. — G699. Upper Matanuska Valley, Alaska. Talus from 

 cliff about 1 mile up the next to the lowest creek entering the East 

 Fork of Boulder Creek from the south. 



6701. Float from about a third of a mile below locality 6700. 



OTOTZAMITES BORNHOLMIENSIS MOUer? 



Plate 81, figs. 5, 6. 



Otozamites bornholmiensis Moller, Bidrag till Bornholms fossila flora, Gymnosper- 

 mer, Kongl. Svenska Vetenskaps-Ak. Handl., vol. 36, 1902, p. 12, pi. 2, 



figs. 1-7. 



The two fragments figured are all that were contained in the Mata- 

 nuska collection, and while not very well preserved they appear to 

 be the same as Otozamites hornholmiensis of Moller, from the island of 

 Bomhohn. They differ shghtly in being a httle larger and in having 

 the pinnules more distinctly alternate, and for this reason the iden- 

 tification has been questioned. The nervation is very obscurely pre- 



