During the years 1925–7 an investigation was made of the Culicine mosquito fauna of Singapore, mainly with the object of learning which species were responsible for the local mosquito plague, and where they bred. In the course of this work numerous species were reared, the larvae of which have never been described, and descriptions of these are presented in this paper; these are supplementary to the descriptions published recently by Edwards (Bull. Ent. Res. xvii, pt. 2, 1926).