LISTS OF THE LOWER 
Benson Knot (continued). 
Odontochile caudata (Brong. Sp.) 
— — Var. minor. 
Discina rugata (Sow. Sp.) 
— striata (Sow. Sp.) 
Spirifera sub-spuria (d’Orb.) 
Hemithyris nucula (Sow. Sp.) 
Orthis lunata (Sow.) 
Chonetes lata (V. Buch Sp.) 
Lingula cornea (Sow.) 
Avicula Danbyi (M°Coy). 
Pterinea demissa (Conrad Sp.) 
lineata (Gold.) 
— pleuroptera (Conrad Sp.) 
— retroflexa (Wahl. Sp.) Var. a. 
subfalcata (Conrad Sp.) 
tenuistriata (M°Coy). 
Modiolopsis solenoides (Sow. Sp.) 
Anodontopsis angustifrons (M°Coy). 
— securiformis (M°Coy). 
Sanguinolites anguiliferus (M°Coy). 
— decipiens (M*Coy). 
Leptodomus amygdalinus (Sow. Sp.) 
— globulosus (M*Coy). 
— truncatus (M°Coy). 
— undatus (Sow. Sp.) 
Grammysia cingulata (His. Sp.) Var. a. 
— — Var. £. triangulata (Salt. Sp.) 
— extrasulcata (Salt. Sp.) 
— rotundata (Salt. Sp.) 
Arca Edmondiiformis (M°Coy). 
— primitiva (Phill.) 
Cucullella coarctata (Phill. Sp.) 
— ovata (Sow.) 
Tellinites affinis (M°Coy). 
Conularia cancellata (Sandberger). 
— subtilis (Salt. Sp.) 
Litorina corallii (Sow. Sp.) 
Naticopsis glaucinoides (Sow. Sp.) 
Murchisonia torquata (M°Coy). 
Bellerophon expansus (Sow.) 
Orthoceras tenuicinctum (Portk.) 
Cycloceras Ibex (Sow. Sp.) 
— tracheale (Sow. Sp.) 
Blain-y-ewm, W. of Nantyr, Glyn Ceiriog, S. of Llan- 
gollen, Denbighshire. Upper Bala. 
Palzeopora megastoma (M°Coy). 
[Pasc. 11.] 
PALAZOZOIC FOSSILS. 
UY) 
Or 
Blain-y-ewm (continued). 
Stenopora fibrosa (Gold. Sp.) 
— — Var. a. Lycopodites (Say). 
— — Var. f. regularis (M°Coy). 
Ptilodictya explanata (M°Coy). 
Retepora Hisingeri (M°Coy). 
Glauconome disticha (Gold.) 
Fenestella Milleri (Lonsd. Sp.) 
Trinucleus gibbifrons (M°Coy). 
Acidaspis Brighti (Murch.) 
Odontochile truncato-caudata (Portk. Sp.) 
Illzenus Rosenbergi (Eichw.) 
Spirifera biforata (Schlot. Sp.) 
— — Var. d. fissicostata (M*Coy). 
Spirigerina marginalis (Dal. Sp.) 
Orthis Actoniz (Sow.) 
— calligramma (Dal.) 
— elegantula (Dal.) 
— porcata (M°Coy). 
— Vespertilio (Sow.) 
Strophomena antiquata (Sow. Sp.) 
— grandis (Sow. Sp.) 
— pecten (Linn. Sp.) 
— simulans (M°Coy). 
Leptagonia depressa (Dal. Sp.) 
Bodean, Caernaryonshire. Upper Bala. 
Orthis flabellulum (Sow.) 
— testudinaria (Dal.) 
Lepteena sericea (Sow.) 
Strophomena grandis (Sow. Sp.) 
oo 
Braes, one-and-half miles E. of Girvan. Bala Group. 
Petraia zquisuleata (M°Coy). 
Tentaculites ornatus (Sow.) 
Hemithyris hemisphzrica (Sow. Sp.) 
— nucula (Sow. Sp.) 
Brathay, Lancashire. Upper Bala (Coniston flag). 
Graptolites Ludensis (Murch.) 
Brigsteer, Kendal, Westmoreland. Upper Ludlow. 
Nebulipora papillata (M°Coy). 
Spongarium interlineatum (M°Coy). 
Tetragonis Danbyi (M°Coy). 
Cornulites serpularis (Schlot.) 
Pterinea Boydi (Conrad Sp.) 
Leptodomus amygdalinus (Sow. Sp.) 
Zz 
