In his recently published paper “ Diptera of Medical and Veterinary Importance, I—Types of Older Authors in Continental Museums ” (Philippine Journ. Sci., xxvii, 2, pp. 177–200, June 1925), Major W.S. Patton (loc. cit., p. 189), writing of Haematobia nudinervis, Stein (Ann. Mus. Nat. Hung., xvi, 1, p. 150, 30 August 1918), states that this is the species hitherto known as Bdellolarynx sanguinolentus, Austen ; and that, since “ nudinervis was described a year before sanguinolentus,” Stein's name for “ this common Oriental bloodsucking muscid …” must henceforth be adopted. On the question of priority, however, Major Patton is in error. The description of Bdellolarynx sanguinolentus (Ann. Mag. Nat. Hist. (8), iii, p. 290) appeared in March 1909—nine and a half years earlier than that of Haematobia nudinervis, so that the latter designation is antedated by a fairly wide margin.