OF COAL-MEASURE PLANT-IMPRESSIONS. 181 
Middle Coal Measures. 
Coalfields :—Kent. South Welsh. Pembrokeshire. Wyre Forest 
North (Lower). North Staffordshire. Notts and Derby. York- 
shire. South Lancashire. Fife. 
Lower Coal Measures. 
Coalfields:—North Staffordshire. South Lancashire. Neweastle- 
Durham. Ayrshire. Lanarkshire. 
LEPIDOSTROBUS LONGIBRACTEATUS (Prestw.) *. (PI. 8. figs. 18 4 & B, and 
19 4 & B.) 
1840. Lycopodites ? longibracteatus, Prestwich, in Trans. Geol. Soc. ser. 2, vol. v. p. 488, 
pl. 38. figs. 9-11. 
Diagnosis—Axis 3-5 mm. in diameter. Lamina of sporophyll about 
5 em. long by 8 mm. in width at widest part ; apex acute ; fairly prominent 
midrib ; closely parallel lateral veins meeting the midrib at an acute angle. 
Pedicel of sporophyll broadest at junction with lamina; greatest width 
apparently about 6 mm. and length 6-8 mm. Sporangium about 4-6°5 mm. 
long by 2-4:5 mm. high. 
Remarks.—This is the cone of Lepidophloios acerosus (Lindl. & Hutt.), 
found by Prestwich in continuity with that stem. So far as I am aware, 
this species has not been described since. It is nearly allied to Lepidostrobus 
intermedius (Lindl. & Hutt.) and L. lanceolatus (Lindl. & Hutt.), but I think 
it is probably distinct from both these species. Williamson (Organisation, 
ete., pt. 19, 1893, pl. 8. fig. 54) refigures Prestwich’s type by means of a 
very inadequate drawing, and also figures another specimen, from Aber 
Sychan (Brit. Mus. V. 4261), which he regards as belonging to the same 
species. It is certainly closely similar, but, if specifically identical, it repre- 
sents a more massive example than the type-specimen. 
Type. British Museum (Nat. Hist.), type. The type-specimens are re- 
figured on Plate 8. figs. 18 À & B and 194 &8. Figure 184 shows the 
cone at the end of a branch (nat. size), while the cone is represented on a 
larger scale in fig. 18B. Fig. 194 shows the specimen from which 
Prestwich’s pl. 38. fig. 9 was drawn; fig. 19B is a photograph of the other 
half of the same nodule. 
Distribution. Middle Coal Measures. 
Coalfield :—Coalbrvokdale. 
* [I am mainly responsible for this section. I am indebted to Mr. W. N. Edwards of the 
British Museum (Nat. Hist.) for much kind help both in connection with the literature and 
in tracing the type-specimens.—A. A. | 
