1973 iv, 390 p., several maps, 38 plates, black gilt-titled cloth. An excellent systematical revision with new species, distribution maps, etc. Memoirs of the American Entomological Institute. Number 20. Library stamps and number on lower end spine, otherwise a good clean copy.
1973 iv, 390 p., several maps, 38 plates, black gilt-titled cloth. An excellent systematical revision with new species, distribution maps, etc. Memoirs of the American Entomological Institute. Number 20. Library stamps, else a good copy.