Description of a new species of Apogonia discovered by M. L. Ritsema in Java

Having recently described several species of Apogonia from the collection of the Leyden Museum ¹), I need make no apology for adding another to the number. This species was discovered by the lamented Marius Leonard Ritsema, of the Dutch Indian medical service, who died in July last on the passage from Atjeh to Batavia, and I have with melancholy pleasure named it in honour of this esteemed physician and zealous naturalist.