6 ON GYMNOSPERMATOUS FRUITS 
fortunately exhibits, to some extent, the internal structure. This 
fragmentary specimen is a portion of the base of a cone (Pig. 4), and 
the magnified section (Fig. 5) is perpendicular to the axis. The axis 
itself is wanting. The scales leave the axis at a right angle, except 
those at the very base, which slightly incline downwards. They have 
a thickened peltate apex, not imbricated, composed of loose cellular 
tissue. The longitudinal section necessarily shows a single seed con- 
nected with each scale. The seed had a thick testa, indicated by the 
thick dark line in the sketch. The contents of the seed have disap- 
peared, leaving only the shrivelled-up tegmen still attached at the base 
of the seed, though apparently free at the apex. A rolled cone, four 
scales of which are represented at Fig. 7, has the apices of the scales 
nearly rubbed off, and exhibits the bases of the seeds at their attach- 
ment to the scale ; and this shows that there are only two seeds to 
each scale. 
The recent genus to which these fruits are most nearly related is the 
South African genus Encephalartos. Associated with the cones at 
Brook Point are found trunks of Clathraria, of which, no doubt, they 
were the fruits. The form and structure of these trunks confirm the 
affinity of the Wealden Cycads to >cephalartos. In both the trunks 
are tall and cylindrical, and the medulla is traversed by numerous 
vascular bundles. 
As long as we are unable to refer these fruits to the species to which 
they belong, it is desirable that they should have provisional nanus 
by wind, they may be known. To prevent confusion, I will avoid 
Endlicher's generic name Zamiodrobm, and propose Qycadeoslrobus as 
a suitable designation, giving no farther definition to the genus than 
that it contains fossils that are supposed to be the fruits of Cycadta. 
1. Cycadeodrobm ovattu. Cone ovate; scales somewhat broader than 
deep. (Plate LVII. Figs. 1 and 2.) 
The specimen of this cone, which is two inches long bv a little more 
than one and a half broad, is less compressed than the other specimens 
figured. It has been cut longitudinally through the axis, but does not 
exhibit any structure. 
From the Wealden at Brook Point, Isle of Wight. 
2. Q. truncatm. Cone ovate, truncate, and widest at the base, nar- 
rowing upwards from the middle to its obtuse apex ; scales about a 
third broader than deep. (Plate LVII. Fig, 3.) 
