1889-189 ii, 344 p., 32 lithographed plates [I-XXXI, VIIIa], 4to. Slightly later green pebbled cloth with gilt title on spine.An important basic work on these faunas with Gastropoda, Polyplacophora, and Bivalvia. With excellent figures of new and little known species that are often quite well-preserved. Fishes and trilobites and some other arthropods are included too but occupy only four plates. One of the rarer parts of the Palaeontographical Society monographs. Outer ends spine worn, first free end-paper chipped, library stamps on title page, otherwise a good clean copy.