122 YORKSHIRE NATURALISTS UNION. 
MIDDLE COAL MEASURES. 
Hor.—Sżale on the horizon of the Woolley Edge Rock. 
Loc.—Cadeby Colliery, Conisborough. 
Carpolithus bivalvis Gopp. 
Ante, pp. 64, 96. 
Additional locality. 
MIDDLE Coat MEASURES. 
Hor.— Barnsley Thick Coat. Loc.—Denaby Main Colliery, 
near Barnsley. 
