Ber ridge. — On Two New Specimens of Spencerites insignis . 279 
Sporophylls. Pedicel from 2 to 3 mm. long-, expanding into a distal 
limb bearing ventral and dorsal lobes. 
Sporangia , spherical or ovoid, seated on the ventral lobe. 
Spores , tetrahedral, becoming spheroidal when free, with a hollow 
equatorial wing. Maximum diameter of spore without wing, about 0-14 mm. ; 
with wing, about 0*28 mm. 
Wood of axis , 20-arch, without prominent angles ; with or without 
pith. 
Locality , near Halifax and Huddersfield, and at Dulesgate. 
Horizon , Lower Coal-Measures. 
EXPLANATION OF PLATES XI and XII. 
Illustrating Miss Berridge’s paper on Spencerites. 
Phot. 1. Radial section of strobilus. s., stele; i. c., inner cortex; o.c., outer cortex; sp., best 
preserved sporophyll. x 7. 
Phot. 2. Tangential section through cortex showing the verticillate arrangement of the leaf- 
traces, 1 . 1 . x 7. 
Phot. 3. Sporophyll-head seen in radial section ( sp . Phot. 1), showing the sporangial attachment 
and the vascular bundle passing out to the distal limb, which has perished, x 27. 
Phot. 4. Sporophyll-head with distal limb attached, seen in slightly tangential section. The 
dorsal lobe is much decayed, x 32. 
Phot. 5. Transverse section of inner part of axis, m., pith with central strand of thick-walled 
cells; x., xylem; i.c., inner cortex ; /. t., leaf-trace, x 35. 
Phot. 6. Transverse section of sporophyll, with distal limb ( a ) attached, x 32. 
Phot. 7. Tangential section of strobilus. sp.ped, ., cross-section of pedicel of sporophyll. x 20. 
Phot. 8. Section through the ventral lobe and sporangial attachment, sp. at. x 40. 
Phot. 9. Portion of radial section of the axis, showing the arched leaf-trace, /. t passing through 
the outer cortex, o.c., into the base of the sporophyll-pedicel, pd. ; x., xylem ; i.c., inner cortex, 
x 40. 
Phot. 10. Portion of transverse section of axis, showing two leaf-traces. Each leaf-trace appears 
twice in the section owing to its arched course. 
