During the period from 25 May to 5 June 1962, one of the authors, Rokuro Kano, made a survey of medically important flies on Okinawa Main Island of the Ryukyu Islands. This work resulted in a collection of more than 2, 000 fly specimens. Some years before this (December 1952-May 1953), Dr. Tokuichi Shiraki surveyed both agriculturally and medically important flies on the Ryukyu Islands and also collected many fly specimens. The authors examined fly specimens of both surveys in detail, and found one new genus and three new species of sarcophagid flies among them. Regarding the generic names of these species, the authors followed the opinion of Dr. B. B. Rohdendorf and Dr. H. S. Lopes.