♀ and ♂ new to Vancouver. Hitherto only the male of this fossorial wasp had been known. The males recorded in the literature came from Nove Scotia, Cananda; Montana, Colorado, Arizona, Oregon and Washington. The female is related to T. medius, Fox, but differs in size, sculpture and ornamentation, particularly in the contrast between the deep median sclcus on the metanotum and the regular subdued sculpture adjoining. In medius the sclcus is not sharply outlined, nor is there a strong contrast between it and the sculpture of the adjoining area which is rough. The female of T. latipes is much like the male, and is readily referred to its fully described sex. Prof. Harvey sent one female taken 21st June, 1903, and one male 19th June, 1903, to Dr. Henry Skinner, who referred them to me for identification.