OTOZAMITES. 65 



O. Klipsteinii (Dunk.), var. superba mini. 



V. 2745*. PI. I. Fig. 4. 



Kachis 12-5 cm. in length. Largest pinna 4'2 cm. by 1'6 cm.; 

 smallest 3'8 by 1'2. The largest pinnae of V. 2336 has a length 

 of 2 cm. and a breadth of 9 mm. Some of the pinnae are verv 

 cleaiiy preserved, and show excellent venation. The rachis 

 appears to be slender, as in V. 2336. The upper pinnae have 

 very slightly auriculate bases, which are attached by their central 

 portion to the surface of the frond axis. In the lower pinnae the 

 base is more distinctly lobed. Cf. Pterophi/llum oblong if olium, 

 Ivurr [= Glossozamites oblong if oli us (Kurr) J. 1 There is not, I am 

 inclined to think, sufficient proof of any important difference 

 between V. 2336 (PI. I. Fig. 3) and V. 2745 (PL I. Fig. 4) 

 to warrant a specific separation ; but as we shall find a gradual 

 transition from such specimens as V. 2745 to the fronds with 

 much larger pinnre, e.g. PL YIL, it will be convenient to institute 

 a variety of Duuker's species under the name superba. Eccles- 

 bourue. Rufford Coll. 



V. 2170. PL VII. Fig. 9. It may be, as suggested in the 

 introductory account of the species, that we have two or three 

 species included under 0. Klipsteinii (Dunk.), but thanks to the 

 numerous and well-preserved specimens it is possible to examine 

 an unusually fine series, and so escape to some extent from the 

 dangers of fragmentary and imperfect portions of fronds, which 

 often lead to unnecessary multiplication of specific names. In 

 the present instance we can trace a gradual transition from the 

 short and broad segments, such as those represented in PL VII. 

 Fig. 5 (V. 2745), to the large forms such as PL VII. Figs. 1 

 and 6 (V. 2122). The leaves with the broader and more or 

 less imbricating obliquely set pinnae come very near to 0. Beanii, 

 and those with more separate, longer, and narrower segments 

 closely resemble the pinnae figured by Fontaine as Zamites 

 tenuinervis, Font. In fragments of young fronds or in the lower 

 part of older fronds the pinnae may have a length of 2 cm. and 

 a breadth of l'4cm., in the larger segments 8 - 2 X 2 -4 cm. In 

 this specimen (V. 2170) the rachis is 23 cm. in length ; it has 

 left a hollow mould in the rock, roofed over by the basal ends 



1 Kurr, pi. i. fig. 5. 



