OF COAL-MEASURE PLANT-IMPRESSIONS. 199 
L. lycopodioides, or perhaps of other species also. Passing by Fischer’s con- 
tribution, the most recent figure of this plant is that given by Vernon 
under the name Lepidodendron simile, Jongmans. 
Several examples of the cones of this species have been figured by Nathorst, 
Kidston, and others, but I do not propose to discuss these here, as I am solely 
concerned with the vegetative shoots of this plant. I would, however, point 
out that those recently attributed by Kidston (18. pl. 11. figs. 2 & 3) belong, 
in my opinion, to L. Iycopodioides. 
Notes on the Examples of L. ophiurus here figured. 
No. 131. A portion of an example of this species with rather large leaf 
bases is figured on Pl. 12. fig. 23, natural size, and in fig. 24, enlarged. The 
leaf bases vary from 7°5 to 10 mm. in length, and average about 5 mm. across 
at their widest point. The leaf bases are separated by double bands of bark, 
and the lateral angles are somewhat rounded, though still distinctly angular. 
The upper and lower extremities are straight or slightly curved. The leaf 
scar lies above the centre and is, as is usually the case, very clearly marked. 
Tt occupies almost the whole width of the rib. It bears the three usual prints, 
often rather faintly preserved. It is comparatively tall, the upper and 
lateral angles being acute, while the lower angle is very obtuse or somewhat 
concave, The lateral lines are short and not clearly marked. The keel is 
faint except at the very base, and the ornamentation is either absent or very 
faint. There are no sub-parichnoid prints. ` 
No. 3472. In the specimen seen enlarged three times on Pl. 12. fig. 25, 
the leaf bases are much smaller, They measure 4 mm, in length by 2 mm. 
in breadth. There is only one print of the leaf scar visible and that is 
central. The keel is well marked and is without ornament. 
No. 3478. Another example is shown enlarged three times on Pl. 12. 
fig. 26. This has quite small leaf bases, as is commonly the case among the 
leafy twigs of this species. Here they measure 3 mm. in length by 2 mm. 
or a little more in breadth. They are otherwise similar to those seen in the 
specimen last described, except that no prints can be seen of the leaf scar. 
Figured Specimens incorrectly or doubtfully identified with L. ophiurus. 
It may be noticed in passing that Schimper (25. ii. p. 19) overlooked or 
ignored Brongniart’s L. ophiurus. The L. elegans and the L. gracile of 
Brongniart are referrel by him to L. Sternbergit, Brongn., which I regard 
as an error. 
With regard to Zeiller's list of synonyms published in 1888, I should 
merely reject as doubtful the references to Sternberg’s Lycopodiolites affinis 
(1826, pt. 4, pl. 56. fig. 1), Lindley & Hutton's Lepidodendron gracile (1831, 
vol, i. pl. 9), and the same authors’ L, dilatatum (1831, vol. i. pl. 7. fig. 2), 
