ZAMITES. 85 



V. 2262. (PL III. Fig. 1.) This agrees fairly closely with 

 Dioonites abietinus (Gopp.) as figured by Hosius and von Marck l ; 

 probably their specimen is not a true example of Goppert's 

 species. Small piece of rachis with long and narrow pinnse ; mode 

 of insertion well seen. Cf. 21253 ; breadth of pinnae about the 

 same, but in the present specimen the segments are farther apart 

 and more spreading ; this difference, however, only applies to the 

 upper three-fourths of 2125$ ; in the lower fourth it is practically 

 identical with V. 2262. This and some other specimens appear to 

 be identical with D. Buchianus var. angustifolia as figured in the 

 Potomac Flora, and with some of Yokoyama's specimens, e.g. 

 pi. xxii. fig. 4, pi. xxv. fig. 5, and pi. xxviii. figs. 8 and 9. 2 

 Cf. V. 2898, V. 1069, and the upper part of 21250. Longest 

 pinna 7'5 cm., and 3mm. broad. Ecclesbourne. Rufford Coll. 



V. 720. Two specimens. Fragments of a young frond ; pinnae 

 very obliquely set and approximate. Hastings. Dawson Coll. 



V. 1069. Small specimen, probably the lower part of a frond, 

 the pinnae being much narrower in the lower than in the upper 

 portion ; manner of attachment of segments distinct. Cf. V. 2262, 

 V. 2125^, V. 21233, etc. Ecclesbourne. Rufford Coll. 



V. 2123. Very imperfect example. Bases of several pinnaa 

 show clearly the manner of attachment to the rachis ; at the base 

 of some of the pinnae a wrinkled appearance suggests the existence 

 of a callosity. There is not quite the same gradual narrowing of 

 the pinnae towards the frond axis as in V. 2227 and many other 

 specimens. Pinnae long, and tapered to an acuminate tip, as in 

 V. 2363 (PL III. Fig. 2), etc. 



V. 21235. Rachis about 27 cm. long; pinna? 4 mm. broad, alternate 

 and approximate. Cf. V. 2898. The lower part of this specimen 

 appears to be identical with the upper portion of V. 2125, also with 

 V. 720. Evidently a young frond. 



V. 2123^. Part of a single pinnae, showing sharply pointed apex ; 

 venation not distinct. Ecclesbourne. Rufford Coll. 



1 (A. 1), Palseontographica, vol. xxvi. pi. xliv. fig. 199. 



2 Yokoyama, loc. cit. 



