28 GKAMMYSIA CINGULATA, var. TRIANGULATA (Salt.) Natural size, from the Upper 



Ludlow rock near Kendal. 



29 GRAMMYSIA EXTRASULCATA (Salt.) Left valve, natural size, from the Upper Ludlow rock 



near Kendal. 



30 DOLABRA OBTUSA (M'^Coy). Natural size, from the tilestone of Storm Hill, Llandeilo. 



31 TELLINITES AFFINIS (M'=Coy). Natural size, from the Upper Ludlow of Benson Knot. 



32 HOLOPELLA MONILE (M^Coy). Natural size, from the schists of Selattyn road. 



32 a Magnified. 



33 HOLOPELLA GRACILIOR (M=Ooy). From the schists of Dinas Bran, natural size. 



34 LOXONEMA ELEGANS (M<=Coy). Natural size. Lower Ludlow, Green Quarry, Leintwardine. 



35 NATICOPSIS? GLAUCINOIDES (Sow. Sp.) Natural .size, from the Upper Ludlow rock of 



Beckfoot, Kirkby Lonsdale. 



35 « Magnified. 



36 TURBO CREBRISTRIA (M<^Coy). Small specimen, natural size, from the schists of Alt yr Anker, 



Meifod. 



37 EUOMPHALUS TRIPORCATUS (M-^Coy). Natural size, from the schists of Cyrn y Brain. 



38 Small specimen, seen from below. 



3.9 CAPULUS? EUOMPHALOIDES (M-'Coy). Natural size, from the Lower Ludlow of Leintwardine. 

 40 TROCHUS CiELATULUS (M-'Coy). Natural size, from the limestone of Old Radnor, Presteign. 



40 a Magnified. 



41 TROCHUS CONSTRICTUS (M'Coy). Natural size, from the schists of Cymraerig. 



42 MURCHISONIA PULCHRA (M"^Coy). Natural size. 



42 a ■ Magnified. 



43 MURCHISONIA GYROGONI A (M<^Ooy). Natural size, from the schists of Yspatty Evan. 



43 a Magnified. 



44 MURCHISONIA SIMPLEX (M-'Coy). Internal cast, natural size, from Alt yr Anker. 



45 PLEUROTOMARIA CRENULATA (M-^Coy). Natural size, from the Upper Ludlow rock near 



Kendal. 



45 a Magnified (the spiral striation not sufficiently distinct). 



46 LITORINA UNDIFERA (M'^Coy). Natural size, from the Aymestry limestone near Aymestry. 

 46 a Magnified (the undulation of the upper keel of the body whorl not sufficiently marked). 



