Male: Ground color dark brown ; head broader than thorax at humeri; frons opaque, brownish pruinose, especially on the frontal plates, around the ocellar triangle and along the margins of the eyes grayish pruinose in some lights, above the antennal bases narrowly reddish; face retreating, grayish pruinose, parafacials and cheeks with a silvery sheen, the latter about one-third the eye height, two reddish brown lines appear in some lights. dividing the face from the parafacials; two dark brown bars from antennal pits to eyes; oral margin quite noticeably produced, narrowly dull reddish on the rim; clypeus dark brown and prominent; mouthparts dark brown, palpi black; antenna and arista dark brown, the latter nearly bare; occiput gray pruinose, silvery between the paracephalic sutures.

In identifying Chrysopidae from the South and West I have come across some new species, a few specimens have been in the collection for years, but more specimens have shown their distinctness. Correction is made of a misidentification in my Revision of the Chrysopidae and three Cuban forms have been taken in Florida.

A small (6-7 mm.) brownish testaceous species, with semi-transparent elytra and pronotum, and narrow metasternal lobes. It has somewhat the facies of colymbus described in this paper, but is not closely allied to it or to any described North American species.

For some time I have doubted whether the existing determinations of certain of Walsingham's species of plumes, based on the revision of this family by Barnes and Lindsey, were correct. Through the kind offices of Messrs. Tams and Stringer of the British Museum of Natural History I have been furnished with drawings of the left claspers of the male genitalia of a number of Walsingham's types in the genus Oidaematophorus; a study of these drawings in connection with my own slide material has confirmed my suspicions and shown that in at least two cases there had been misidentifications by the above-mentioned authors. With a view to clarifying the situation somewhat in this extremely difficult group I offer the following notes.