B54 
Brigsteer (continued). 
Cucullella ovata (Sow. Sp.) 
Nucula Anglica (d’Orb.) 
Conularia subtilis (Salt.) 
Pleurotomaria crenulata (M°Coy). 
Orthoceras angulatum (Phill.) 
— baculiforme (Salt. ) 
— dimidiatum (Sow.) 
Cycloceras subannulatum (Miinst. Sp.) 
— tenuiannulatum (M°Coy). 
Bron Einion Quarry, under Pen-y-big. Upper Bala 
or Wenlock shale. 
Orthoceras ventricosum (Sharp Sp.) 
Brynbedwog Quarry, near Bala. Upper Bala. 
Hemithyris depressa (Sow. Sp.) 
Leptzena deltoidea (Conrad). 
Bryn Eithin, Penmachno, N. Wales. 
Stenopora fibrosa (Gold. Sp.) 
Beyrichia complicata (Salt.) 
Tsotelus Powisi (Murch.) 
Orthis Actoniz (Sow.) 
— elegantula (Dal.) 
— testudinaria (Dal.) Var. a. 
Leptzena sericea (Sow.) 
Strophomena compressa (Sow. Sp.) 
— Spiriferoides (M°Coy). 
Upper Bala. 
Bryn Evan Ysputty, N. Wales. Upper Bala. 
Trinucleus latus (Portk.) 
Orthis elegantula (Dal.) 
— plicata (Sow. Sp.) 
Leptzena sericea (Sow.) 
Bryn Melyn, near Bala, Merionethshire. Upper Bala. 
Stenopora fibrosa (Gold. Sp.) 
— — Var. a. Lycopodites (Say). 
Tretaspis fimbriata (Murch. Sp.) 
Portlockia apiculata (Salt.) 
Calymene brevicapitata (Portk.) 
Pseudoerania divaricata (M°Coy). 
Spirifera biforata (Schlot. Sp.) 
— — Var. a. lynx (Eichwald. Sp.) 
— — Var. ¢. biforata (Schlot. Sp.) 
— — Var. d. fissicostata (M°Coy). 
Orthis Actonize (Sow.) 
— elegantula (Dal.) Var. a. 
BRITISH PALAXOZOIC FOSSILS. 
Bryn Melyn (continued). 
Orthis parva (Pander). 
— plicata (Sow. Sp.) 
— rigida (Davidson). 
— Vespertilio (Sow.) 
Lepteena deltoidea. 
— — Var. 8. undata (M°Coy). 
Strophomena Spiriferoides (M°Coy). 
Leptagonia depressa (Dal. Sp.) 
Lingula ovata (M°Coy). 
Conularia cancellata (Sandberg. ) 
Trochus constrictus (M°Coy). 
Bugon Knockdollian, Ayrshire. 
Illzenus crassicauda (Dalman). 
Orthis confinis (Salt. ) 
Builth (three miles North of), Radnorshire. 
Bala. 
Graptolites latus (M°Coy). 
Diplograpsus pristis (His. Sp.) 
Serpulites dispar (Salt. ) 
Cytheropsis Aldensis (M°Coy). 
Trinucleus gibbifrons (M°Coy). 
Tretaspis fimbriatus (Murch. Sp.) 
Ampyx latus (M°Coy). 
— nudus (Murch. Sp.) 
Ogygia Buchi (Brong. Sp.) 
Barrandia Cordai (M°Coy). 
Kecoptochile Sedgwicki (M°Coy). 
Tsotelus laticostatus (Green Sp.) 
Pentamerus lzevis (Sow.) 
Leptagonia depressa (Dal. Sp.) 
Spondylobolus ecraniolaris (M°Coy). 
Pterinea asperula (M°Coy). 
Cardiola interrupta (Brod.) 
Orthoceras angulatum ( Wahl.) 
— filosum (Sow.) 
— primzevum (Forb. Sp.) 
— subundulatum (Portk.) 
— ventricosum (Sharp Sp.) 
Cycloceras subannulatum (Miinst. Sp.) 
Hortolus giganteus (Sow. Sp.) 
Burton and Brockton. Upper Ludlow. 
Graptolites Ludensis (Murch.) 
Serpulites longissimus (Murch.) 
Discina rugata (Sow. Sp.) 
Bala Group. 
Upper 
