Vol. 69.] OUR KNOWLEDGE OF WEALDEN FLORAS. 103 



PL XII, fig. 4 a. The scale, shown half of the natural size in 

 fig. 4 a, measures 10x6 cm.; it is slightly convex, and rather 

 sharply hent down at the left-hand edge, while at the upper 

 margin it is in organic connexion with a piece of woody axis. 

 The dark band encircling an area near the centre is due to the 

 presence of carbonaceous matter, and has no significance. Over 

 the whole surface is a raised reticulum with meshes varying in 

 size and shape (PI. XII, figs. 4 6 & 4 c): towards tbe right-hand 

 edge this reticulum passes into irregularly anastomosing ridges 

 (fig. 4 c). This surface-sculpturing may be due to the shrinkage 

 of a thick scale originally covered by a felt of hairs, as are the 

 scales of Dioon and some other Cycads. 



Text-fig. 6 A (p. 102). This specimen (half of the natural size) 

 consists of a sandstone cast of a portion of a stem with imperfectly 

 preserved attached scales, one of which is shown at S. The irre- 

 gular sinuous lines in the upper part of the stem indicate the 

 presence of other scales lying on the stem. 



Text-fig. 6 B (p. 102). In this example there is similar evidence 

 of the attachment of scales (S, S) to a stem ; and the occurrence 

 of ridges and striations oblique to the stem suggests the former 

 presence of a complete covering of scales. 



PI. XIV, fig. G. An imperfectly-preserved carbonized scale, like 

 those shown in text-fig, 6B and in PI. XII, fig. 4 a, when treated 

 with Schulze's solution, yielded pieces of cuticle showing numerous 

 stomata and the outlines of very thick-walled epidermal cells. The 

 stomata agree in the form of the guard-cells with those of recent 

 Cycads. 



The additional information supplied by these specimens, although 

 not sufficient to settle definitely the systematic position of the 

 fossils, gives some support to the opinions expressed in Part II of 

 the ' Wealden Flora.' 



Planta incerke sedis. 

 Conites berrti, sp. liov. (PI. XII, fig. 13.) (Rufford Coll.) 



1895. Conites armatus Seward, ' Weaklen Flora ' pt. 2, p. 222 & pi. ix. fig. 7. 



"When the specific name armatus was given to this Wealden cone 

 in 1895, the previous use of the designation Conites armatus by 

 Sternberg 1 was unfortunately overlooked. The obscure fossil so 

 named by Sternberg was subsequently transferred to Equisetites 

 prisms Gein. by Feistmantel, 2 in his account of the Radnitz flora. 

 The new specific title is chosen in recognition of the valuable 

 contributions to our knowledge of Potomac plants made bv 

 Mr. E. W. Berry. 



The portion of a cone shown in fig. 13 is less incomplete than 

 the type-specimen : the cone-scales are oval or more or less poly- 

 gonal, with a, strong angular spine similar to that observed on the 



1 Sternberg (25) p. xxxix & pi. xlvi, fig. 1. 



2 Feistmantel (lb) p. 94. 



