Select a village or any small collection of native huts where you know, either from a blood examination or from spleen palpation, that the children are infected with malaria.

The examination of the armature of the males of all the hitherto described species of the genus Glossina, with the exception of G. maculata, Newstead,* has not only revealed some very striking morphological characters, but has led to the discovery of three new species† and the re-establishment of Bigot's G. grossa.‡ One of these new species, G. submorsitans, Newstead, has hitherto been overlooked through its striking similarity to G. morsitans. Morphologically these two species are separable chiefly by the small but important organs herein described as the median lobes; these characters will be best understood by reference to the accompanying figures (figs. 15ml, 16ml), in which the difference is as well marked as that between the holoptic and dichoptic heads found in certain groups of Diptera. G. palpalis, R. D., and G. tachinoides, Westw., are also very closely allied in the general form of the armature of the males, but they are easily separable by the minute differential characters of the inferior claspers (figs. 9ic, 11ic).

Head black with pale scales; palpi black; proboscis black. Thorax and scutellum purplish brown. Abdomen black, with curved apical bands on the second, third, fourth and fifth segments and with lateral apical spots on the fifth, sixth and seventh segments. Legs black, unbanded.

The presence of trypanosomiasis in cattle in the Province of Mozambique has made the question of tsetse-flies one of considerable interest and importance. During the past two-and-a-half years the writer has lost no opportunity of gathering information as to the whereabouts of tsetse-belts. It has been very difficult, because of the inaccessibility of most parts of the Province. The northern districts of Nyasa and Mozambique, for example, are practically impenetrable except for a few miles along the coast; no roads exist, and the natives, while not actively hostile, do not favour the intrusion of the white man. The northern part of the Zambesia district and the Tete district are likewise seldom visited by white men. It was not possible to organise a system of collecting reports of fly-belts from officials because of the small number of officials in these out-of-the-way regions. The writer has, however, been enabled to visit practically all accessible parts of the Province, and by questioning officials and natives and those who have been through the more inaccessible regions, has gathered considerable data. Specimens of fly have been secured from many of the places recorded. Although the few notes given are by no means complete, it seems best, however, to place them on record now.

August 17th, 1910. Between Lupitanguo Pool and Namiwawa (1).* Bright day; steady easterly breeze; fly scarce, though present throughout journey; more plentiful by pools in shade. Country thickly wooded. Water plentiful. Buffalo country.

Acting under the instructions of the Liverpool School of Tropical Medicine I proceeded to Malta on the 25th of June 1910, and stayed in the Island for a period of two months. The object of this expedition was to investigate the problems connected with the menace to health caused by the blood-sucking “Papataci Flies” of the genus Phlebotomies.* The greater part of my time was devoted to searching for the breeding-places of these insects with a view to devising practical prophylactic measures for the control of the pest. Other phases relating chiefly to the bionomics of Plilebotomus were also investigated; and attempts were made to rear the insect from the egg

Belonging to the reptans group; thorax dark dove-grey with a faint greenish tinge; abdomen dark green, shining; legs entirely black; wings hyaline, iridescent, with pale veins, squama whitish with white fringes, halteres pale yellow with a darkened stem.