This paper deals with the males and females of the genus Sarcophaga Meigen and is a continuation of one previously published in the Proceedings of the Boston Society of Hatural History (Vol. 55, Ho. 1, Sept. 14, 1914) on the males of the genera Ravinia R.-Desvoidy and Boettcheria R. Parker. It was hoped that descriptions of the females of the last two genera could be given at this time. While this has proved impossible, some reference is made to them in the appendix. Other papers will be published from time to time as opportunity permits.