First edition. HB. Red cloth with dark blue titles to spine, and dustjacket with illustrations to front by D.J. Watkins-Pitchford. 171pp. With frontispiece and 5 illustrations by Watkins-Pitchford in plates (nice scraperboards). Based on detailed field observations. A Good+ copy. Very Good book, clean covers and page faces, with light browning and spotting to closed edges, gift inscription inside front cover; in Good jacket, with wear to edges including small tears, and small losses to back edges, as well asmarks to edges; price -clipped.