Early in the summer of 1935-36 the Government maize meal bait was used for the first time against hoppers of the brown locust in the north-western Cape Province and in the western Orange Free State. When the first red locust hoppers of the season hatched at Chakaskraal, in Natal, in December 1935, the writer tested the departmental bait against them, and found that excellent kills could be obtained on hoppers of the first and second instars in plant cane one foot in height. The bait was prepared according to the formula: maize meal 92 lbs., molasses 7 lbs. and arsenite of soda 1 lb.
This short article will, it is hoped, be of interest to entomologists, be they professionals or laymen. It is a brief outline of how the writer first became interested in fruit flies: an interest which grew into an absorbing hobby, and at the same time added much to the knowledge of this branch of entomology. Fruit growing, an elementary knowledge of botany, and a love of the countryside were qualifications perhaps well suited to lead one into work of this nature.
Very like both Dacus purus Curr., and D. ghesquierei Coll. *). There is, however, at least in the specimens with a more darkly developed wing-pattern, a distinct, although rather pale, apical spot at the tip of the wing. Further, there is no median, post-sutural, yellow spot or stripe on the mesonotum and no yellow fascia on the second abdominal segment. As to whether all three may prove to be but forms of one species can only be decided when more material is available for study.
In studying the species of African Trypetidae that have been placed in the genera Afreutreta Bez. and Parafreutreta Mro. it has become necessary to consider to some extent their wider relationships. Two groups of genera appear to be concerned, including some from the plaearctic region, others from North and South America Allies among the South American genera in particular are of interest, as the African forms have been considered less related to them and more to the oriental, particularly Indian, genera.
The object of this paper is twofold. Firstly it is intended to assist and encourage the study of larvae, a subject of investigation of the greatest theoretical and practical importance, but hitherto scarcely touched on in South Africa. Secondly it is to record the structure of an interesting larva which, being a member of a very primitive family, the Hepialidae, comes near in structure to the hypothetical larva, and may thus serve as a basis for the study of larvae of specialized families.
Very frequently some of my kind correspondents send me batches of Lepidoptera either for indentification, or for incorporation in my collection, or both. Unfortunately it often happens that consignments arrive in such a bad state of preservation, that the specimens are of very little scientific value, and their identification is practically impossible. Such material testifies to the great zeal of the collector, but it also shows that he has not observed certain simple rules which should be followed in collecting and packing Lepidoptera.
The following paper consists of short systematic and biological notes on some Stratiomyidae and Asilidae of Southern Rhodesia. The immature stages of Ptecticus posticus Wied., N eolophonotus porcellus Speis., and Promachus negligens Ad. are descriptionbed, and notes are given on the distribution and habits of some little-known Dasypogonine ""robber flies"". Lasiocnemus fascipennis n.sp. from S. Rhodesia and N.W. Tanganyika, and Stichopogon maculipennis n.sp. from Urungwe, Lomagundi district, are descriptionbed.
The object of this study was to compare the chromosome pictures of several different types of the smaller Acrididae. In order to obtain the correct nymphal stages for sectioning, the different species had to be bred in cages. In collecting material for breeding purposes an ecological study of the species was made and this was continued in the breeding cages.