818 DEPARTMENT OF THE INTERIOR 



2 GEORGE V., A. 1912 



1430 



. jS'ilsonia pasaytensis, n. sp. 



Fig. 3. Nilsonia pas>aytensis, n. sp. x 1/1. 

 Number — : — embraces two small specimens, each of which represents a 



single pinnule of a compound leaf, attached to a strong rachis. Each pinnule 

 is approximately triangular in outline, with a broad base and a somewhat narrow 

 though obtuse apex. The margin is entire and the whole organ is transversed 

 by prominent and parallel nerves about 1.5-2 per mm., which extend 

 from the base to the apex. This species is quite distinct from anything hitherto 

 described from Canadian localities, although Dawson (9) published a new species 

 from the Upper Cretaceous of Baynes Sound, Vancouver island, but from the 

 published figures which show a larger plant with a very different form of pinnule, 

 there would seem to be no connection between the two. 



In Ward's most recent contribution to the Mesozoic flora of North 

 America, he publishes a description and figures of a species of Nilsonia from 

 Thompson creek, Douglas County, Oregon. This he identifies with N. nip- 

 ponensis, which \okoyama had previously described from Japan, and which 

 Ward thinks may be also comparable with various Jurassic species from Siberia, 

 which Heer has described under the names of Peterophyllum and Anomozamites 

 (57: p. 94, pi. xvii, f. 8-10). 'On comparing our specimen with those figured by 

 Ward, a very striking resemblance is to be noted with respect to individual 

 pinnules, but it is to be observed that within the limits of the same leaf, the 

 pinnules show a somewhat wide variation of such a nature that taken indivi- 

 dually, several species might be made from the parts of one leaf. It is, there- 

 fore, quite possible that our specimens are really representative of N. nip- 

 ponensis, but as such a conclusion is not wholly justified by the nature of the 

 material now in hand, it is thought that a separate name to be employed 

 tentatively, would be altogether more appropriate, and it has, therefore, been 

 named with respect to the locality from which it was derived. 



1430 _ ^ 

 . Cycadites ukjiga, Dn. 



Under number — — are included several fragments of pinnate leaves with 

 strong and rigid, linear and conspicuously nerved pinnae given off from the main 



