Pliotograiihed )>y A. R. Dwerryhouse, Leeds. 
Fig. 1. 
ZAPHRENTIS O.MALIUSI VAIi. DENSA, THORNTON QUARRY. 
Photographed l).v A. R. Dwerryhouse, Leeds. 
Fig. 2. 
ZAPHRENTIS OMALIUSI A'AR. AMBIOUA, RAIN HALL QUARRY. 
Froc. Yorl-s. Geo/. Soc, VoL XVL, Plate XL VIII. 
