The first list of the crane-flies of Ontario under this general title was published in Canadian Entomologist, vol. 58, pp. 236-240; October 1926. In the present paper more than 80 additional species are recorded, based on the very extensive series of these flies contained in the Canadian National Collection, taken chiefly by Messrs. C. H. Curran, F. P. Ide and G. S. Walley. Species not included in the basic list are indicated by an asterisk (*) preceding the name. The total list of Tipulidae now known from Ontario is in excess of 150 but there are still more than 100 regional species that will undoubtedly be added to the list as a result of further collecting. As before, the collectors are indicated by initials following the record: C.H.C.=C. H. Curran; F.P.I.=F. P. Ide; G.S.W.:G. S. Walley.