77 2 Jeffrey-—On the Affinities of the Genus Yezonia . 
referred by those who have studied it only in impressions. It is of course 
possible that the Cryptomeriopsis antiqua of Stopes and Fujii may not be 
specifically identical with Geinitzia Reichenbachi. In any case there can 
scarcely be any doubt as to the generic equivalence, and the species must 
be very closely allied. 
Conclusions. 
It will be apparent from the foregoing paragraphs that there is the 
closest superficial and structural resemblance between the genera Yezonia 
and Cryptomeriopsis of Stopes and Fujii and the Cretaceous genera, of 
world-wide distribution in the Northern Hemisphere, Brachyphyllmn and 
Geinitzia respectively, so well known from impressions and recently 
described for their structural features as well. There seems accordingly no 
reason to maintain these new generic names since the older ones already 
hold the ground. 
This conclusion as to the true affinities of these two supposedly new 
Cretaceous genera of the Anglo-Japanese authors will have the advantage 
of connecting the interesting Cretaceous flora of Hokkaido, Northern Japan, 
with the Cretaceous flora of the rest of the Northern Hemisphere. The 
validity of this conclusion is much strengthened by the nature of the 
Abietineous remains recently described by Miss Stopes from the same 
deposits, since these correspond closely, so far as they go, with the similar 
remains described structurally from the Cretaceous clays of Kreischerville, 
Staten Island, N.Y. 1 If this general inference is correct, and it seems 
supported by very strong evidence, it is clear that regions so widely 
separated geographically as Southern New England and Northern Japan 
were characterized during the Cretaceous period by a similar and character¬ 
istic Coniferous flora, including Abietineae and Araucarineae, the latter 
simulating in their external appearance both vegetative and reproductive 
genera of the Cupressineae and Sequoiineae (Taxodineae), which in reality 
did not exist at so early an epoch, and with which they certainly have not 
the slightest affinity. 
Summary. 
1. Yezonia , Stopes and Fujii, is in reality Brachyphyllmn^ and as a 
consequence should be known, in accordance with accepted principles of 
nomenclature, only under the earlier generic name. 
2. Cryptomeriopsis , Stopes and Fujii, is in reality another long known 
Cretaceous genus, Geinitzia , and should likewise be eliminated. 
3. The Cretaceous Coniferous flora of Northern Japan had much in 
common with that described structurally and from impressions from the 
eastern coast of North America. 
1 Stopes and Kershaw, Ann. Bot., xxiv, No. 94. 
