OF COAL-MEASURE PLANT-IMPRESSIONS. 213 
oblong-oval pinnules slightly eared at the base, the sinuate nerves, erect and 
little arched, dichotomising three times or less, are features all clearly por- 
trayed in these figures. Cyclopteroid pinnules similar to those shown by 
Lesquereux on pl. 16. figs. 6 & 8, are often associated with this plant, but, so 
far as I am aware, they have not been {and in continuity, and I therefore 
hesitate to apply the specific name to them. 
Neuropteris callosa, Lesq. Pinnules to show nervation. Lesquereux, L. 
Atlas to the Coal Flora of Pennsylvania, 1879, pl. 16. 
The specimen from Kent figured by myself in 1909 and the seed-bearing 
examples described by Kidston and Jongmans in 1911, both referred to 
N. obliqua, now appear to me to be identical with Lesquereux’s plant. 
So far as I am aware, these are the only trustworthy examples of this 
very common type which have yet been figured, though, among the many 
hundreds of Neuropterids described on the Continent, there may, of course, 
be some which on re-investigation would prove to be identical. 
Description of the Specimens figured here. 
No. 2730. Part of the pinna of this species is shown natural size on 
Pl. 15. fig. 9, and some pinnules from the same specimen in fig. 10, enlarged 
three times to show the nervation. 
The pinnules in this case are rather small, the largest being about 7 mm. 
or less in length and 5 mm. across at their widest point. They are strictly 
oval. The terminal pinnule is narrow and rather short in this case, though 
in some instances here its full length is not disclosed. The pinnules are 
closely set on the rachis and sometimes overlap one another slightly. They 
are very slightly eared at the base. The nerves (fig. 10) are clear, but fine 
and nearly all of equal strength. They are slightly arched and flexuous and 
equally spaced. 
No. 613. Pinnules from another specimen are shown nat. size in Pl. 15. 
fig. 11 a, and enlarged (x2) in fig. 11B. The pinnules here are larger, 
some of them being about 1 cm. long. 
