Through the kindness of Mr. Don B. Stallings, of Caldwell, Kansas, the author received for examination a small series of an Incisalia that appears to represent a race of the eastern I. henrici Grote and Robinson. This series was later augmented by about 40 more specimens from Mr. Stallings and 32 from an adjacent locality taken and sent by Mr. Robert Whittaker, of Eureka, Kansas. With this series it was possible to draw up a good description of the subspecies and to obtain quite accurate ideas as to the extent of its variation. In addition to this material, both Mr. Stallings and Mr. Whittaker sent further specimens for comparison, for which many thanks are due.