THE JURASSIC FLORA OF SUTHERLAND. 693 



the pinnae is clearly seen in photo. 12, PL VII. ; in the middle pinna near the base there 

 seems to be a cross-connection between adjacent veins. In the example seen in fig. 67, 

 PL IV., the incomplete narrower pinnae show one or two oblique cross-veins (fig. 67 A). 

 Among species referred to Ctenis and other genera with which Pseudoctenis eathiensis 

 may be compared are — Ctenophyllum grandifolium Font.* from the Trias of Virginia, 

 C. Wardi Font, from the Jurassic of Oregon,! Zamites africana from the Wealden 

 of South Africa,! Z. Weberi from the Jurassic of the Caucasus, § etc. Eichwald's 

 species Zamites angustifolius || from Persia resembles the Culgower plant except in 

 the more numerous veins. It is noteworthy that in Ctenophyllum Wardi, Fontaine 

 describes the anastomoses as far from frequent ; the parallel veins are more numerous 

 than in Pseudoctenis eathiensis. The species to which Schimper applied the name 

 Ctenophyllum have the Pterophyllum rather than the Ctenis habit, and I have 

 therefore made use of a new name rather than adopt the designation Ctenophyllum. 



Pseudoctenis crassinervis sp. nov. (PL IV. fig. 69 ; PL VII. photo. 17.) 



The two specimens represented in fig. 69 and photo. 17, while agreeing in the 

 manner of attachment of the pinnae with P. eathiensis, differ from that type in the 

 more prominent and coarser venation and, as regards photo. 17, in having shorter 

 segments. Two complete pinnae are preserved in the specimen reproduced in photo. 17, 

 in which the rather broad acuminate tips are seen at a, a. It is possible that the 

 greater coarseness of the venation may be due to an accident of preservation, but it 

 is more probable that the frond belongs to a distinct species. 



This species may be compared with Ctenophyllum pachynerve Font, from Oregon H 

 and with Zamites pachynervis** described by Schenk from the Wernsdorf beds in 

 the Carpathians. 



Zamites, Brongniart. 

 Zamites Buchianus (Ettingshausen). (PL X. photo. 47.) 



1852. Pterophyllum Buchianum, Ettingshausen, Abh. k.k. geol. Reichs., Bd. i., Abth. 3, No. 2, p. 21, 



pi. i. fig. 1. 

 1873. Zamites Milleri, Zigno, Flor. Foss. Oolit., p. 40. 

 1884. Podozamites Heerianus, Richards, Proc. R. Phys. Soc. Edin., p. 121. 



1890. Zamiophyllum Buchianum, Nathorst, Denks. k. Akad. Wiss. Wien, Bd. lvii. p. 46, pis. ii.,iii., v. 

 1895. Zamites Buchianus, Seward, Wealden Flora, vol. ii. p. 79, pis. iii., iv., viiia. 



Fig. 47, PL X., represents part of Miller's original specimen ft which Richards 

 named Podozamites Heerianus before he discovered that Zigno had already 

 designated the Scotch specimen Zamites Milleri. The habit of the frond and the 

 presence of numerous fine veins in the pinnae lead me to identify this specimen without 



* Fontaine (83), pis. xxxix.-xlii. + Ward (05), pi. xxiii. \ Seward (03), pi. v. 



§ Seward (07), pi. ii. || Eichwald (68), pi. ii. fig. 7. IT Ward (05), pi. xxiii. 



** Schenk (71 2 ), pi. iv. tt Miller (57), fig. 136. 



