On pp. 50—52 of the present volume of this journal, I described the new genus and species Calotarsa ornatipes, which I then supposed to be an anomalous syrphid. I am, now convinced that it is a platypezid. At the time of writing the paper, which was sent in in the fall of 1892, I overlooked the ciliate alulae of the wings, the apical spur of middle tibiæ, and the similarity of venation with the Platypezidæ.