On a Cone of Calamostachys binneyana. 255 
Their length appears to vary considerably, from 15 to 35 mm. or more, 
but it is very difficult to determine if they are complete. They seem 
to have been cylindrical in shape with a blunted apex. The breadth 
is 4—5 mm., and there are six or seven whorls of sporangiophores 
per centimetre. 
Below many of the cones a leafy stem is seen, often several 
centimetres in length. It is about *8 mm. broad and is densely 
covered with small falcate leaves, 6 or 7 whorls occurring in a 
length of 3 mm. Each leaf is about 2’5 mm. long. The preservation 
of the specimen does not allow the number of leaves in a whorl to 
be accurately counted, but it seems to have been considerable. The 
“ annulus ” cannot be made out. 
Numerous small, leafy branches without cones also occur, 
bearing similar whorls of, perhaps, 8—10 leaves. The larger 
stems have internodes more than 1 cm. long, and bear rather longer 
leaves. 
These cones have been identified as Paracalamostachys 
williamsoni, Weiss, and closely resemble the type specimen 
described and figured by Weiss. 1 In the latter, 3 which is now in the 
British Museum (Nat. Hist.), the leafy shoots below the cones are 
considerably shorter than in the present case, but they differ 
greatly in length among themselves. 
The leafy shoots correspond closely in all respects with those 
of Calamocladus grandis (Sternb.). Zeiiler 3 in his “ Flore fossile de 
Valenciennes ” figures and describes specimens of this type, and also 
a cone in connection with a leafy shoot. The latter is very similar to 
the present specimen, but was rather longer. Zeiller’s figure (PI. LIX., 
Fig. 6) shows an entire cone precisely similar to mine, but in his 
drawing to show details (Fig. 6 A) he represents the bracts as free 
to the base. Owing to the difficulty of making out the structure 
in impressions, I am inclined to think that this does not vitiate 
the conclusion that the cones described above are the same as 
Calamostachys grandis, Zeiiler. 
It may be useful to enumerate here the different species of 
Calamostachys which have been found as impressions in connection 
with the foliage of Catamites occurring in the British Coal 
Measures, (see Table on next page). 
Calamostachys ludwigi, Weiss, belonged to foliage of the 
1 Weiss (84), p. 193, PI. XXII., Fig. 9. 
2 No. 1057, Williamson Collection. 
3 Zeiiler (86), p. 376, PI. LIX., Figs. 4—7. 
