CRETACEOUS CONIFERALES 39 
remains commonly referred to Sequoia Reichenbachi. In both the 
clay layers and the lignitic debris of the Androvette pit the leafy 
twigs of this species are the most abundant of the many so-called 
Sequoia fragments; but examination of their internal structure has 
demonstrated that they do not belong to that genus, as will be sub- 
sequently described, and hence the generally accepted generic name 
must be abandoned. 
The species is also clearly not referable to the genus 4raucarites 
as defined by either Sternberg? or Endlicher,3% but belongs in the 
genus Geinitzia of the latter author, in which he included it under 
the name Geinitzia cretacea,?" ignoring the earlier specific name 
given by Geinitz. In view of the above mentioned facts and in 
accordance with the accepted rules of nomenclature, we have there- 
fore adopted for the name of this species the new combination 
Geinitzia Reichenbachi (Gein.). 
The general appearance of the leafy twigs, natural size, as they 
occur in Ше clay layers, is well indicated in figs. 7-10, Pl. 5, and 
the details of the external characters in the enlargements shown in 
figs. 3, 4, Pl. 8. These latter two figures represent a single speci- 
men, X IO, viewed from opposite sides, and they show both the 
falcate form of the leaves and their tetragonal cross-section. 
It will probably be conceded by paleobotanists that our figures 
serve to identify the specimens with the species beyond any reason- 
able doubt; but the fact should be borne in mind that different 
authorities have included a number of more or less different forms 
under it, some of which may have been referred to the original 
species incorrectly, and this has perhaps resulted in crediting it with 
an erroneous and altogether too extended geographic and strati- 
graphic range. As commonly recognized its geographical distribu- 
tion covered the United States, Canada, Greenland and Europe, 
while stratigraphically it apparently extended from the upper Juras- 
sic to the end of the Cretaceous period. We, therefore, desire to 
have it understood that the facts of internal structure and the conclu- 
sions in regard to botanical relationship which are next described and 
discussed are referable only to the species as it occurs in the Creta- 
ceous deposits at Kreischerville or in their equivalents elsewhere. 
35 Presl, in Sternb., Verst. 2: 203. 1838. 
# Gen. Plant. 263. 1836-40. 
°" Synops. Conif. 281. 1847. 
