The specimens enumerated in the present paper were collected (a) by C. H. Eigenmann in January of 1912 in the bay and on the shores of the Caribbean Sea at Cartagena, and in March, 1912, at Buenaventura on the Pacific shores of Colombia; (6) by Arthur Henn and Charles Wilson in January, 1913, at Tumaco and in the Rio Rosario, both near the southwestern corner of Colombia; and (c) by Arthur Henn in May, 1913, at Guayaquil, Ecuador.
