Brauns (1926) was the first to call attention to the special interest attaching to the little bees of the genus Allodape Lep and Serv., that are common and so widely spread in Africa. He proved that they are unique among bees in their nesting habits and show the primitive beginnings of social life. Nearly all nest in dry stems. They are mostly black, with yellow markings on the head.
The types of the new species descriptionbed in this paper are in the collection of the South African Institute for Medical Research. Para types, where indicated, have been presented to the British Museum.
This article is the first of a series on South African Culicini in relation to yellow fever prevention. The finding of two new Aedes of the subgenus Ochlerotatus Lynch Arribalzaga descriptionbed in this article, is of particular interest in view of the few species of this subgenus occurring in the Ethiopian Zoo-geographical Region of Africa.
The position of the botflies within the order Diptera has long been the subject of debate. Emden (1940), and Oldroyd (1949) have followed Hendel in considering the family a member of the Acalypterae. In this paper we, too, are of this opinion. The larvae of these flies parasitize the equids and the rhinoceros.