26 EQUISETITES. 
3582. 12:5 cm. long. Average length of internodes 2 cm., 
breadth 1:2 cm. Mantell Coll. 
3591. Badly preserved and crushed stem, shows four and 
a half internodes. One branch. Cf. Schenk, Palseontographica, 
vol}. xix: pl. xxiv. fig..12: Mantell Coll. 
3594. Stem showing three nodes, sheathing leaves, and one 
branch. Mantell Coll. - 
3598. Small piece, with one node and leaf-teeth particularly 
well shown, also a branch; almost identical with Schenk’s fig. 11, 
pl. xxii. Paleontographica, vol. xix. Mantell Coll. 
3601. This small specimen may be merely a fragment crushed 
at one end, but possibly it is the apical termination of a branch. 
The long linear leaf-teeth are distinctly seen and appear to be 
closely pressed against the apical bud. Cf. Hyuisetites Minstert, 
Schimp.! Mantell Coll. 
8383. Internodes about 2°2 cm. long and 2°2 em. broad. This 
specimen, also 10,847, 12,3899 and others, has shorter internodes 
than most examples of the species; the leaves are less clearly seen, 
but faintly indicated here and there. There is a distinct similarity, 
as regards the diameter of the stem and the length of internodes, 
between such specimens as this and the figure of guisetites 
Phillipsii, Schimp., given by Schenk,? but I am unable to fix 
upon any definite characteristic which would warrant the removal 
of these larger forms to another species. Pounceford. Jantell Coll. 
12,399. Probably the same species. 14:5 cm. long; leaves 
not clearly defined. Pounceford. Mantel Coll. 
12,403. Internodes 2°5 cm. in length, 1:8 em. broad. Im- 
perfectly preserved. Pounceford. Mantell Coll. 
12,406. 11°5 cm. long. Impressions in the places of the 
characteristic leaves. Pounceford. Mantell Coll. 
39,123. 6°5 cm. in length. Crushed and very imperfect. At 
two of the nodes there are irregular projections, with their 
surfaces exhibiting a rough warty appearance; in all probability 
1 Schimper, Trait. pal. vég. Atlas, pl. viil. fig. 4. 
* Paleontographica, vol. xix. pl. xxii. 
