Stethomyia pallida, n. sp.— ♀. Head light testaceous, a few white flat lanceolate scales on the vertex, othewise clothed with sparsely set slender hair-like curved brown scales, nearly as long as the very slender fork scales which occur on the occiput; two light brown bristles project foward between the eyes, and a few around the eyes. The head shows no sign of having been denuded, and besides the slender hair-like scales is covered with a short fine tomentum or frostiness, such as is oftern seen of the thorax of Anophelina.