LISTS OF THE LOWER 
Burton and Brockton (continued). 
Spirigerina reticularis (Linn. Sp.) 
Hemithyris Davidsoni (M°Coy). 
— nucula (Sow. Sp.) 
— Wilsoni (Sow. Sp.) 
Strophomena ? filosa (Sow. Sp.) 
Leptagonia depressa (Dal. Sp.) 
Chonetes lata (V. Buch Sp.) 
Pterinea tenuistriata (M°Coy). 
Orthonota cymbiformis (Sow. Sp.) 
Litorina octavia (Sow. Sp.) 
Bwleh Llandrillo, Corwen, N. Wales. Upper Bala. 
Orthis retrorsistria (M°Coy). 
Lepteena tenuissimestriata (M°Coy). 
Bwleh y Cibau, N. of Meifod. Upper Bala. 
Spirifera biforata (Schl. Sp.) 
— — Var. a. lynx (Eichwald Sp.) 
Orthis elegantula (Dal.) Var. a. 
— Vespertilio (Sow.) 
Leptagonia depressa (Dal. Sp.) 
Bwleh y groes, S. of Bala, Merionethshire. Upper 
Bala. 
Stenopora fibrosa (Gold. Sp.) 
Trinucleus gibbifrons (M°Coy). 
Orthis elegantula (Dal. Var. a.) 
— retrorsistria (M°Coy). 
Strophomena Spiriferoides (M°Coy). 
Cader Dinmael, near Corwen, Denbighshire. Upper 
Bala. 
Stenopora fibrosa (Gold. Sp.) 
— — Var. a. Lycopodites (Say). 
Ceraurus clavifrons (Dal. Sp.) 
Orthis Actonize (Sow.) 
— elegantula (Dal.) 
— flabellulum (Sow.) 
— parva (Pander). 
— plicata (Sow. Sp.) Var. 
— protensa (Sow.) 
— testudinaria (Dal.) Var. a. 
— Vespertilio (Sow.) 
Leptzena sericea (Sow.) 
Strophomena compressa (Sow. Sp.) 
Leptagonia depressa (Dal. Sp.) 
Modiolopsis modiolaris (Conrad Sp.) 
PALAZOZOIC FOSSILS. 355 
Cairn Ryan, Ayrshire. ¢ Lower Bala. 
Diplograpsus mucronatus (Hall Sp.) 
— pristis (His. Sp.) 
— sextans (Hall Sp.) 
Capel Currig, Snowdon, N. Wales. Lower Bala. 
Orthis parva (Pander). 
— elegantula (Dal.) Var. a. 
Leptzena sericea (Sow.) 
Capel Garmon, Denbighshire. Upper Bala. 
Phacops alifrons (Salt.) 
Homalonotus bisuleatus (Salt.) 
— rudis (Salt.) 
Orthis elegantula (Dal.) 
— parva (Pander). 
Carnedd fawr (S. of), Bala, N. Wales. 
Trinucleus gibbifrons (M*Coy). 
Orthis parva (Pander). 
Upper Bala. 
Carn Goran, Cornwall. Upper Bala. 
Orthis calligramma (Dal.) 
— retrorsistria (M°Coy). 
Castell Craig, Gwyddon, Llandovery, S. Wales. 
Bala. 
Petraia rugosa (Phill. Sp.) 
— uniserialis (M*Coy). 
Pentamerus oblongus (Sow.) 
Upper 
Cautley Crags, above Sedbergh. (Caradoc sandstone 
and Upper Bala.) 
Graptolites sagittarius (Lin. Sp.) 
Cefn Coedog, Corwen, N. Wales. Upper Bala. 
Fenestella Milleri (Lonsd. Sp.) 
Retepora Hisingeri (M°Coy). 
Orthis elegantula (Dal.) Var. a. 
— ascendens (Pander Sp.) 
Leptzena sericea (Sow.) 
Strophomena grandis (Sow. Sp.) 
Leptagonia depressa (Dal. Sp.) 
Cefn ddu, Denbighshire. Wenlock shale. 
Cardiola interrupta (Brod.) 
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