NOTES ON CALAMOPITYS. 219 
they pass down in the pith, to a diameter of 0°25 mm. and less. The 
smaller strands are as a rule embedded in the pith, a few layers of paren- 
chyma separating them from the secondary wood (l.e. Pl. 3. fig. 2). The 
large, outgoing strands are centrally mesarch, like those of C. Saturni 
(Le. Pl. 1. Phot. 2); the smaller strands, forming their downward 
continuation, become eccentrically mesarch with the protoxylem towards the 
inner side, and may even approach an endarch structure. 
The course of the leaf-traces has been followed in successive transverse 
sections ; the phyllotaxis is 2/5, with short internodes; each leaf-trace, as it 
passes down in the pith, eventually unites with a reparatory strand on its 
kathodic side (l. c., Diagrams 1-4). 
In the outgoing trace, as it enters the secondary wood, the protoxylem 
divides into two groups, which may become widely separated (Phot. 23). 
The division of the trace as a whole has not been observed, and probably 
took place too far out to be shown in the incomplete specimens alone 
available. 
The secondary wood has essentially a Cordaitean structure, with medullary 
rays one cell or locally two cells in width, and of no great height (Scott, l: c. 
Pl. 4. fig. 6). The tracheides have from two to four rows of bordered pits on 
the radial wall ; the pits are arranged in more regular vertical rows than in 
the three previous species ; in the form of the pits there is little difference, 
for in C. fascicularis, though often isodiametrie, they are about as frequently 
elongated in the transverse direction. The pits of adjacent rows alternate 
regularly and are in close contact with one another, so that their outline is 
more or less hexagonal (l.c. Pl. 3. figs. 4, 5). 
The inner layers of the secondary wood are peculiar, for they consist 
largely of short, wide tracheides with numerous irregular rows of pits 
(l.c. Pl. 3. fig. 3). In this region the medullary rays are also dilated 
and distorted. 
It is evident that this species differs in several respects from any of those 
previously considered. The significance of these differences will be discussed 
after the next and last species has been dealt with. 
CarAMOPITYS DEINERTIANA (Goeppert), Scott. 
Eristophyton Beinertianum (Goeppert), Zalessky. 
This is the old Araucarites Beinertianus of Goeppert *. 
The primary wood was first described in 1902 (Scott, 1902, p. 341), and 
the characters then observed led me to place the species in the genus 
Calamopitys, side by side with C. fascicularis. 
The figures given in the paper of 1902 have since been supplemented by five 
excellent photographs from Solms-Laubach's Falkenberg specimen, published 
* For synonyms and references, see Scott, 1902, p. 344 footnote. 
