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The cyclophorid operculate land mollusks of America.
1942 iv, 305 p., 42 plates, paperbound. Uncut. Very good copy.Although not apparent from the title, this book deals with the Cyclophoridae of Cuba (by De La Torre and Bartsch), the other West Indian islands (by Paul Bartsch alone), and the American mainland (by Bartsch and Morrison). It deals with the higher systematics within the group (e.g. introducing a new subfamily) and the species, of which many are new, or little known and illustrated for the first time. This is the United States National Museum Bulletin 181. This well-illustrated monograph has never been replaced by a more modern one. This is United States National Museum Bulletin 181.
