CYCADOLEPIS. 99 



V. 2929. PI. Y. Fig. 2. 



The figure of this large example shows very well the general 

 appearance of the longer forms ; the surface shown in the drawing 

 is strongly convex, and at the distal end somewhat suddenly 

 incurved. Some of the dark curved lines seen in the figure are 

 irregularly placed grooves suggesting the tracks of some small 

 animal, which has slightly eaten into the hard fibrous substance 

 of the scale. Yery similar markings or grooves have been noticed 

 by Grand'Eury l on a leaf of Cordaites, and described by him as 

 " galeries d'insecte." Other lines and striations on the convex 

 surface of the scale are probably due to a wrinkling of the leaf 

 substance. The large petiole bases on an old stem of Ifacrozamia 

 Douglasi, Hill, in the Botanical Department of the British Museum, 

 bear a striking resemblance to this form of Cycadolepis. In the 

 recent scales there is the same tendency to terminate in the 

 pointed angular fashion as seen in the figured specimen, and 

 in both there is a distinct narrowing towards the base of attach- 

 ment. The convex under surface of the recent scales is covered 

 with a thick down of hairs, and there is a similar wrinkled 

 appearance to that of many of the fossil examples. Ecclesbourne. 



Rufford CM. 



V. 2699. PI. YI. Figs. 6 and 6a. 



This specimen is a good example of the stouter and more 

 pentagonal form of scale, the distal edge is strongly recurved as 

 seen in Fig. 6a, and the narrower basal end shows the surface 

 of attachment. A comparison of this form of scale with those 

 on the stems of Fittonia squamata, Carr., 2 Bucklandia sp., Fittonia 

 Rigauxi, Sap., 3 etc., shows a very close agreement in size and 

 shape. Ecclesbourne. Rufford Coll. 



V. 2799. Another very large specimen, similar to V. 2929 (PI. Y. 

 Fig. 2), 13-5 cm. in length, 7'5cm. wide at the broadest part. 

 The convex surface is marked in places by reticulated lines and 

 wrinklings ; towards the distal end the surface is curved gradually 



1 p. 338, pi. xxii. fig. 7. 



2 Carruthers (1), pi. Ivi. fig. 1. (The original specimen is in the Museum 

 of Practical Geology, Jermyn Street.) 



3 Saporta, loc. cit. pi. cxxvii. 



