106 CARPOLITHES. 



form than Cycadites, if we assume that genus to have possessed 

 seeds similar to those of the recent Cycas. Species of Ulacrozamia 

 possess ovules closely resembling the present specimen. . The 

 seed has a length of 1'8 cm., and is 1 - 1 cm. broad. The mould 

 from which the kernel (Fig. lb} is readily removed, is lined with 

 a thin structure probably representing the integumentary portion 

 of the testa (Fig. 70) ; between this and the matrix there is 

 a layer of coaly substance. The kernel may probably be regarded 

 as a cast of the nucellus, with the impressions of the branched 

 vascular bundles clearly seen on its surface. The fossil figured 

 by Stokes and Webb as Carpolithus Mantelli, 1 shows in the 

 enlarged drawing similar branched markings on the surface, 

 suggestive of vascular strands. It may be that Mantell's speci- 

 men should be retained under its original genus and not 

 transferred to Equisetites, but it is difficult to speak with any 

 certainty, at all events in the absence of the type specimen. 

 Ecclesbourne. Rufford Coll. 



V. 2129, V. 2131, V. 2699. Large flattened and more or 

 less spherical bodies showing coaly substance on the exposed 

 surface ; in V. 2131 the seed (?) is 4 cm. in breadth. It is 

 possible that some of them may be scales and not true seeds, 

 but their general appearance is not unlike that of some recent 

 cycadean ovules, e.g. species of Cycas. Ecclesbourne. 



Rufford Coll. 



Cf. V. 2130*, V. 2236. Small specimen of a badly preserved 

 seed. 



V. 28270. Seed with pointed apex, not unlike Cycadeospermum 

 olovatum, Font. 2 V. 2256. Cast of nucellus with remains of 

 testa, similar to V. 28270. V. 2700*. Cast and mould of 

 imperfect specimen. Ecclesbourne. Rufford Coll. 



V. 3312. Probably a seed of some cycadean plant ; it appears 

 to have split partially open along the longest diameter. Eccles- 

 bourne. Rufford Coll. 



1 (A.), pis. xlvi. and xlvii. 



2 Potomac Flora, pi. cxxxv. fig. 13. 



