LISTS OF THE LOWER 
Tan y Bwleh y Groes (continued). 
Orthis parva. Var. avellana, 
— retrorsistria (M*Coy). 
— Vespertilio (Sow.) 
Leptzena sericea (Sow.) 
Strophomena Spiriferoides (M°Coy). 
Tan y Craig, Builth. Lower Bala. 
Serpulites dispar (Salt.) 
Pseudocrania divaricata (M°Coy). 
Orthis calligramma (Dal.) 
Leptzena sericea (Sow.) 
Teirw River, S. of Llangollen, N. Wales. Bala Group. 
Strophomena compressa (Sow. Sp.) 
Bellerophon bilobatus (Sow.) 
— ornatus (Conrad Sp.) 
Tenter Fell, Kendal, Westmoreland. 
Serpulites dispar (Salt.) 
Homalonotus Knighti (Konig). 
Leptodomus globulosus (M°Coy). 
Upper Ludlow. 
Thorney Lee Quarry, on Tweed. Bala Group. 
Nereites Cambrensis (Murch.) 
Crossopodia Scotica (M°Coy). 
Tottlebank Heights, Coniston Water. Wenlock Group. 
Stenopora fibrosa (Gold. Sp.) 
Trwscoed, Gaerfawr. Bala Group. 
Orthis confinis (Salt.) 
Tregib, S. of Llangollen. Upper Bala. 
Pyritonema fasciculus (M*Coy). 
Stenopora fibrosa (Gold. Sp.) 
Beyrichia complicata (Salt.) 
Trinucleus gibbifrons (M°Coy). 
Ampyx nudus (Murch. Sp.) 
Chasmops Odini (Hich. Sp.) 
Calymene Baylei ( Barr.) 
Isotelus tyrannus (Murch. Sp.) 
Spirigerina marginalis (Dal. Sp.) 
Lingula granulata (Phill.) 
Tremadoc (N. of), Merionethshire, N. Wales. Upper 
PALOZOIC FOSSILS, 
| Tremadoe (continued). 
Trinucleus gibbifrons (M°Coy). 
— radiatus (Murch.) 
Isotelus affinis (M°Coy). 
Orthis parva (Pander). 
Murchisonia pulchra (M°Coy). 
Troutbeck, Applethwaite Common, Westmoreland. 
Upper Bala. 
Cardiola interrupta (Brod.) 
| Tullithwaite Hall, Underbarrow, Kendal. Lower 
Ludlow. 
Strophomena ? filosa (Sow. Sp.) 
Tyn y Cabled, Llanfyllin, N. Wales. Upper Bala. 
Stenopora fibrosa (Gold. Sp.) 
Spirifera biforata (Schlot.) 
— — Var. D. fissicostata (M°Coy). 
Orthis Actonize (Sow.) 
Leptzna quinquecostata (M°Coy). 
Tyn y Frons (E. foot), near Meifod. Upper Bala. 
Halysites catenulatus (Linn. Sp.) 
Tyn y Frydd, near Mathyrafal. 
Orthis elegantula (Dal.) 
Tynant, E. of Llanwddyn, N. Wales. Upper Bala. 
Strophomena compressa (Sow. Sp.) 
Upper Bala. 
Ulverston, Furness. Lower Ludlow. 
Diplograpsus ramosus (Hall Sp.)* 
Underbarrow, Kendal, Westmoreland. Ludlow Group. 
Cyathaxonia Siluriensis (M*Coy). 
| Beyrichia Klodeni (M°Coy). 
Odontochile caudata (Brong. Sp.) 
— — Var. minor. 
Forbesia latifrons (M*Coy). 
Chonetes lata (V. Buch Sp.) 
Conularia cancellata (Sandberger). 
Holopella gregaria (Sow. Sp.) 
Orthoceras angulatum ( Wahl.) 
Hortolus Ibex (Sow. Sp.) 
Wellfield, Builth. Upper Bala. 
Tremadoc slates. 
Graptolites sagittarius (Linn. Sp.) 
Ampyx nudus (Murch. Sp.) 
Ogygia Buchi (Brong. Sp.) 
* This would be a “ Bala” fossil according to the American indications. 
