Fossil Floras of Cape Colony. 25 



Zamites mokrisii (Tate). 



Plate v., fig. 4. 



1867. PalcBOzamia (Podozaviites) morrisii Tate, Quart. Joum. 

 Geol. Soc, vol. xxiii., p. 145, pi. v., fig. 4. 



Frond pinnate ; rachis broad and woody, bearing two rows of 

 pinnaB. The pinnae are attached either at right angles or at a very- 

 wide angle to the rachis ; in shape like the head of a spear, rounded 

 at the base and tapering to an acuminate apex. Veins numerous 

 and parallel. 



A portion of Tate's type-specimen from Geelhoutboom (Museum 

 of Geological Society No. 11,108) of this species is figured on pi. v., 

 fig. 4. 



This solitary specimen may, as Tate believed, represent a well- 

 marked type, distinct from Zamites recta, but it is by no means 

 impossible that it may be a fragment from the basal portion of a 

 frond of that species. It may be compared with Otozamites 

 acuminatus (L. and H.) * from the Yorkshire Inferior Oolite, with 

 which it agrees in the position and form of the segments, but the 

 resemblance is hardly close enough to be regarded as a mark of 

 identity. Some of the specimens from the Potomac formation of 

 America, figured by Fontaine as Nageiopsis ovata f are very similar 

 to Zamites morrisii. In the true Nageiopsis the leaves are arranged 

 spirally as in the recent conifers Agathis and Podocarpus, whereas in 

 Zamites the segments are given off from the rachis in two rows. 



Plate v., fig. 4. 



A portion of the type-specimen is shown in the figure. The stout 

 woody axis bears two lateral rows of short acuminate pinnae, which 

 in venation and apparently also in their manner of attachment to the 

 rachis agree with Zamites recta. 



Zamites afeicaxa (Tate). 



[Possibly identical with Zamites rubidgei (Tate)] . 



Plate v., fig. 5. 



1867. Palceozamia (vel Pteropliyllum) africana, Tate, Quart. Journ. 

 Geol. Soc, vol. xxiii. p. 145, pi. v., fig. 5. 



The type-specimen of Tate (No. 11,110, Geological Society's 



* Seward (00), pi. ii., tig. 1, pi. vi., fig. 1. f Fontaine (89), pi. Ixxvii., Ixxx. 



