The following paper contains descriptions of eleven new species belonging to seven genera, besides notes on some other species. The types of all the new forms are in the British Museum (Natural History). As indicating the countries in which the new species have been obtained, the appended list may be of service.

The Colony of Southern Nigeria was traversed by the writer in 1910, and the following short report is founded on observations made during the first seven months of that year. As will be seen later on, various officers, chiefly medical, stationed in the Colony, afforded material help in the investigation, and the results of their work are also incorporated here; the collections of injurious insects made by them have been duly acknowledged in previous issues of this Bulletin, and also, as far as possible, throughout this report.

The following notes are presented in the simple form in which they were jotted down at the time, as it seems to me that this will be the best way to give a clear idea of what was observed.

Enquiries are frequently made through the Entomological Research Committee with reference to TINEINA bred from cotton, and as the notes on Gelechia gossypiella, Sndrs., published by Lord Walsingham in Fauna Hawaiiensis [1. 731–4 (1907)] are not generally accessible, I have been requested to revise these notes and reprint them with additional information on gossypiella and two species of Pyroderces. It is quite clear that the Gelechia does immense damage to the cotton, attacking the seeds in the boll, but what damage (if any) is actually occasioned by Pyroderces simplex, Wlsm. (= gossypiella, Wlsm.), and rileyi, Wlsm., is not manifest; it would seem that these species are associated with cotton already injured by damp or other insects rather than themselves being the cause of injury. Further information will doubtless be supplied now that the names are available.

Four specimens—one male and three females—mounted in Canada Balsam were sent from Rio Javary, South America. In this condition nothing can said about their colour, and very little about the nature of their hairy covering, except that all parts of the body are apparently hairy, as usual, and that the hairs that are left on the abdomen are very long and almost recumbent.

The following is a list of the more important insects collected in the Province of Mozambique (Portuguese East Africa) and which in some stage of their existence may be harmful to men or animals. During the writer's stay in Mozambique it was impossible to make a complete survey of that immense colony, but as much collecting was done as opportunity offered and this list may be considered a fairly representative one.

As a general rule, on the Benue River and its tributaries, at least between Abinsi and Lau, the tsetses found are Glossina tachinoides and G. palpalis, the latter occurring far less frequently.