Although within the last few years—chiefly owing to the diagnostic ability and brilliant technical skill of Professor Robert Newstead, F.R.S.—several additions have been made to the list of recognised species of Glossina, the numerical total of which now stands at nineteen, the Glossina morsitans Group has not received a single accession. Peculiar interest therefore attaches to the discovery of the species described below, not only by reason of its apparent pathogenic importance,* but also on account of its systematic position within the genus.

In a previous publication (1919), I brought our knowledge of the Ithonidae up to date, so far as the perfect insects were concerned, and gave a short account of the work which had been done by Mr. Luke Gallard and myself in discovering the habitats and dates of appearance of the commonest species, Ithone fusca, Newman. This paper also recorded our success, in November 1918, in obtaining numbers of fertile eggs, larvae and pupae. I promised then to give a full account of the life-history in a later paper, and that promise is now being fulfilled.

During the past summer Mr. F. W. Urich, Government Entomologist, Trinidad, B.W.I., succeeded in rearing a number of small Chalcids from larvae of a thrips in the prepupal stage. The following description is based on part of this material.

Sugar-cane is the principal crop of British Guiana, and during the year 1921 there were 65,870 acres under cultivation. This area yielded 110,985 tons of sugar and 2,228,164 gallons of rum, the value of the crop being about $10,355,000 (£2,157,200).

Species of the genus Hieroglyphus are well known in India as serious pests of rice, sugar-cane, Sorghum, and some other crops, but in nearly all economic entomological publications one species only, H. banian, F. (= furcifer, Serv.) is regarded as being noxious. It is obvious, however, from some of the earlier descriptions and figures that there is more than one injurious species, but the exact status of each one of them could not be established even in more recent economic publications owing to the very unsatisfactory state of the systematics of this group, which made correct identification of species uncertain even for a specialist and quite impossible for an economic entomologist. It is true that comparatively recently I. Bolivar (1912) and J. Carl (1916) published more or less comprehensive papers on the genus, but these papers are not revisions, as the authors did not include all the known species and hardly touched questions of synonymy; moreover, Carl's paper, though published four years after that of Bolivar, was written without any reference to the latter, which resulted in the same species being described twice under different names, thus increasing the confusion. Further, both these authors based their papers on insufficiently extensive material, so that they were unable to appreciate the range of variation in the species.

Information volunteered by Salim, the native headman of Basheshi, near Maswa, drew attention to the outbreak of sleeping sickness here described late in February 1922.

The collection was received through the Deputy Director of Agriculture (Research) and contained the following species, collected by the Assistant Entomologist, Rao Saheb Y. Ramachandra Rao:—

Pseudococcus citri (Risso), on grape vine.

Asterolecanium phoenicis, sp. n., on date palm.