Near fine in original wrappers. Pages cut to facitilate ease of use. A Descriptive Catalog of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama the West Indies and other Islands of the Caribbean Sea, and the Galapagos Archipelago.Unites States National Museum: Bulletin 50, 254 pp. This volume commenced by the late Robert Ridgway and continued by Herbert Rriedmann. Treats the Gruiidae, Rallidae Heliornithidae, Eurypygidae: Cranes, Rail, Coot Gallinules Sun-Grebes Sun-Bitterns. Other volumes in the series may be purchased from Buteo Books