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In 1928 I described, as Palaeobittacus eocenicus, a species of the family Bittacidae from Eocene strata in Colorado. This has been the only representative of the Mecoptera in Eocene deposits and the earliest unquestionable record of a living family of the order. A second Eocene bittacid has now turned up, this time among an extensive collection of insects which Dr. Carl Parsons and I made nearly twenty years ago in Utah. I appears to be a true Bittacus with characteristic wing venation and body features