Drawing depicting: 1. Ieracidea occidentalis. 2. I. berigora. (eggs); Ieracidea berigora, Colored litho print of 4 eggs, with printed title. Identical with Gould 2320 except for minor details of hand coloring. Previously cited as GCS O-26, and so marked in pencil on reverse. An original drawing, unsigned, is in Lord Derby's collection, No. 8 (see Sauer, 1982, p.259).