90 ANOMOZAMITES. 



Zamites Buchianus, but the venation and decurrent pinnae are 

 distinctive features in the former, and the pinnae are more 

 oblique than in Ettingshausen's species. Ecclesbourne. 



Ru/ord Coll. 



V. 2275. Another terminal piece of frond, agreeing closely 

 with V. 2743, and very possibly the same species, but the 

 specimen shows no details, being merely a brown stain on the 

 surface of a coarse grit. It is possible that these two specimens 

 may belong to the terminal portion of a frond of which the 

 older and larger segments are shown in PI. VII. Figs. 1, 4, and 6 

 (V. 2122, V. 21260). Ecclesbourne. Rufford Coll 



V. 2743rt. In some respects not unlike Nathorst's figure of 

 Zamiophyllum Naumanni, a species of Japanese frond now referred 

 to Zamites Buchianus. The present specimen is in all probability 

 part of a frond seen from the under side. Cf. Ctenophyllum lati- 

 folium, Pont., a plant which Fontaine 1 refers for no very obvious 

 reason to Schimper's genus Ctenophyllum,. V. 3183. Fragment of 

 the same form. Ecclesbourne. Rufford Coll. 



Genus ANOMOZAMITES, Schimper. 



[Trait, pal. veg. vol. ii. 1870, p. 140.] 



In discussing the genus Nilssonia mention was made of . 

 Schimper's genus Anomozamites, which he instituted for certain 

 Pterophyllum-like leaves possessing the following characteristics : 

 "Folia speciosa, mediocria, vel parva, elongata - oblonga vel 

 elongato-linealia, pinnatisecta, hie illic (juniora) integra, nervis 

 rhachi perpendicularibus, parallelis, simplicibus vel e basi dicho- 

 tomis ; pinnis inaaqualibus, rectangulis, membranaceis vel tenui- 



coriaceis." 



No mention is made in this definition of the place of insertion 

 of the segments, whether lateral or on the upper surface of the 

 leaf axis. Nathorst has since given special prominence to the 

 manner of attachment of the segments as the chief distinguishing 

 character between the present genus and Nilssonia ; 2 the same 

 author has also instituted a new genus for the reception of 



1 Potomac Flora, p. 175, pi. Ixviii. figs. 2 and 3. 



2 See ante, p. 52. 



