96 YORKSHIRE NATURALISTS UNION. 
Sigillaria tenuis Achepohl. 
Sigillaria tenuis Achep., Niederrh. Westfäl. Steink., explan. 
to pls iv pl. AV, fig. 42: 
MIDDLE Coat MEASURES. 
Hor. — Barnsley Thick Coal. Loc.—South Kirby Colliery, 
near Pontefract. 
Norr.—Very rare; only a single specimen has yet 
come under my observation from Yorkshire. 
Sigillaria tessellata Brongt. 
Sigillaria tessellata. Ante, pp. 57 & 79. 
MIDDLE Coal MEASURES. 
Hor. — Barnsley Thick Coal. Loc.—South Kirby Colliery, 
near Pontefract. 
CORDAITEZE. 
CORDAIANTHUS GRAND'EURY. 
Cordaianthus pitcairniæ. Ante, pp. 6o & 8r. 
MIDDLE Coat MEASURES. 
Hor.— Oaks Coal. Loc.—Hoyle Mill, Barnsley. 
SEEDS. 
CARPOLITHUS STERNE. 
Carpolithus bivalvis. Ante, p. 64. 
MIDDLE CoAL MEASURES. 
Hor.— Barnsley Thick Coal.  Loc.—Monckton Main 
Colliery, near Barnsley. 
ROOTLETS. [ 
PINNOLARIA L & H. 
Pinnularia prostrata Artis, sp. y 
Pinnularia prostrata. Ante, p. 64. 
MIDDLE CoAL MEASURES. 
Hor. — Barnsley Thick Coal. — Loc. — Monckton Main 
Colliery, near Barnsley. | 
Hor.— Black Bed Ironstone.  Loc.—Low Moor (James 
Spencer). 
Geol. Trans. Y.N.U., 1892. 
