872 PROFESSOR A. C. SEWARD AND MISS N. BANCROFT ON 
diaphragms at fairly regular intervals. Professor JEFFREY, in describing similar dia- 
phragms in Araucaropitys,* states that this feature is met with in the medullary regions 
of Abies, Picea, and certain species of Pinus. In the pith of Tamites Jeffrey: there 
is, however, no satisfactory evidence that the transversely elongated cell layers have 
thicker walls than the cells in the intervening layers. A few protoxylem elements 
show spiral bands, and on the radial walls of some of the metaxylem elements there 
is a single row of bordered pits t which are occasionally almost contiguous. The 
medullary rays, so far as can be ascertained from the very imperfectly preserved 
specimen, are 1-3 cells deep. In the crushed cortex are a few tangentially elongated - 
oval spaces which may be referred to resin-canals—a feature opposed to a generic 
identity with Yaxus. The cortex also contains some thick-walled cells, and the 
epidermis has strong outer walls. 
In section the leaves are almost plano-convex, with a broad ridge in the middle of 
the flatter side (fig. 5, Pl. I.): there is a single median vascular bundle with a space 
below it which may be a resin-cana]. ‘There is no palisade tissue, and no clear indica- 
tion of any hypodermal fibres. The leaf reproduced in fig. 5 is cut near the apex, and 
is much smaller than the average breadth of the lamina, which may reach 2mm. ‘The 
data are clearly inadequate to serve as a basis for precise determination of affinity ; and 
it is impossible to say whether or not transfusion tracheides were abundant. 
The general appearance of the leaf shown in fig. 5, though the preservation is too 
incomplete to admit of accurate comparison, agrees closely with that of a transverse 
section of a leaf of Podocarpus andina. 
Masculostrobus Woodwardi sp. nov. (Pl. I. figs. 6-8.) 
1857. Miller, Testimony of the Rocks, fig. 132, p. 475. 
1911. Masculostrobus sp., Seward, Trans. Roy. Soc. Hdin., vol. xlvii. p. 650. 
The generic name Masculostrobus was recently proposed as a convenient designation 
for small Gymnospermous strobili affording evidence, ‘‘either by the presence of 
microspores or by their habit, of a microsporangial nature.” { In addition to the type 
species M. Zeillert Sew., founded on a specimen in the Gunn collection of Sutherland 
plants, a second specimen from the same collection and the fossil figured by MILLER 
were spoken of as Masculostrobus sp. It is the Miller specimen with which we are 
now concerned. In view of the additional facts revealed by sections, though insufticient 
to settle beyond doubt the nature of the fossil, we replace Masculostrobus sp. by 
M. Woodwardi, the specific name being selected in acknowledgment of the valuable 
services of Mr H. B. Woopwarp in connection with the stratigraphy of the Jurassic 
rocks of N.E. Scotland. Muruer’s figure of the Kathie fossil is fairly accurate, the 
* JEFFREY (07) p. 438 ; pl. xxix. fig. 10. 
+ No pits had been recognised when the former description of this specimen was written [SEWARD (11), p. 638]. 
{ Sewarp (11), p. 686. 
