With the removal of certain genera the Illaenidae has become a very homogeneous family. Attempts have been made to group genera into subfamilies, the most important of which was that made by Salter in 1867, but these efforts have not met with general approval. Thus Warburg (1925, pp. 97–100) has given a recent summary of the Illaenid classification and discussed the previous literature, and this author endorses the opinion expressed by Raymond in 1916, “that it is still too early to make any natural classification.” Whittard (1938, p. 89) follows Holm and Warburg and meantime would only admit Illaenus and Bumastus as valid genera and suggests that Salter’s genus Ectillaenus might be retained for species of Illaenids in which visual organs were either absent or vestigial.