During the month of August, 1960, I had the opportunity of studying the extensive collection of ant-lions at the Museum of Comparative Zoology, Harvard University. This collection contains most of the type material of Nathan Ranks and Hermann Hagen. In many cases only syntypes were present which necessitated the desicgnation of lectotypes. Whenever possible I have selected and designated a male specimen as the lectotype since many of the specific characters are restricted to the males. Others of the syntypical series were labeled lectoparatypes. In many instances one specimen had a “type” label and the rest of the series “paratype” labels or no labels at all. However, these labels were not considered to be type designations as they were not indicated as such in the original descriptions. The specimens were therefore considered to be syntypes. Also, in checklng the specimens listed in the original descriptions with the available material, it was sometimes found that other specimens belonged to the type series, even though they were not so labeled. I have included such specimens in my decisions on lectotypes.