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search for its parasites has had to be deferred till next spring. On the other hand, iarge collections of earwigs have been made in various parts of the South of England, and at the end of October some eighty puparía of the parasitic Tachinid Fly had already been secured from them. It was therefore decided that a preliminary con signment should be sent out in cool storage, and it seemed desirable to enlist the good offices of the High Commissioner for New Zealand for the purpose of making the necessary arrangements with one of the shipping companies. His secretary informed me that Sir James Allen would prefer that the business should be tran- sacted through his office, and stated that there would be no difficulty in arranging for the transmission of the package under proper supervision in a suitable tem perature (40° to 45° F.); but no shipment has been made up to the time of writing.

With regard to the Pear Slug, thanks to information kindly supplied by Mr. J. C. F. Fryer, Dr. Imms has been able to secure over two thousand larvæ of this injurious sawfly. In a recent letter he states that a number of the insects are certainly parasitised, but it was not then certain what the parasite was, and the method of handling it cannot yet be decided upon.

A request for assistance in the collection of parasites has also come in from another quarter, namely, Canada. The Dominion Entomologist wrote to say that there had been a rather serious outbreak there of the large Larch Sawfly, and asked for information as to the occurrence of the insect in this country so that he might arrange for the collection of parasitised cocoons. Dr. J. W. Munro, Entomologist to the Forestry Commission, was at once communicated with, and after some dis- cussion he obtained permission from the Commissioners to instruct all the foresters to look out specially for the insect and report to him. As a result of this, a small out- break was discovered in Scotland, and a still smaller one in North Wales. The latter locality did not afford favourable conditions for the collection of cocoons, but from Scotland we received 1,050 cocoons, all of which have already been posted to Canada. This is the third year in which the insect has occurred in that spot, and that makes it probable that the percentage of parasitism will be fairly high. The only expense to which the Bureau has been put in this connexion has been the payment of a small honorarium of three guineas to the forester who collected the cocoons, and we are much beholden to Dr. Munro for the active assistance he has given us in the matter. Glossina Investigations--An interesting report has been received from Mr. C. F. M. Swynnerton on his investigations in the new sleeping sickness area in the Mwanza District, Tanganyika Territory, and will be published in the part of our Bulletin that is now in the press. A remarkable feature about the outbreak is that the fly concerned is either a variety of Glossina morsitans or a very closely allied new species, and yet the trypanosome appears to be T. gambiense. Further, owing to the comparatively close settlement of the area the natives have reduced the game to a minimum, and, perhaps in consequence of this, Mr. Swynnerton found the flies quite prevalent and apparently resident in several villages-a very unusual habit for species of the morsitans group.

A report has also been prepared (and will appear in a subsequent part of the Bulletin) by Drs. W. B. Johnson and Ll. Lloyd, on the work that they have been doing in Nigeria. Apart from a general survey of the distribution of Glossina over a wide area in the Northern Province, a large amount of information has been accumulated as to the natural food of the various species and the kinds of trypanosomes with which they are infected. The authors are, satisfied that G. tachinoides is much the most important fly in Northern Nigeria, as it has now been shown to be a natural carrier of human trypanosomiasis, and is also responsible for heavy losses of stock. They have shown that this is the only tsetse for which human beings constitute a preferred food-supply, and it can maintain itself successfully on man and his domestic animals where game is practically non-existent. This will make it all the more difficult to eradicate, and the difficulty is further enhanced by the fact that, unlike G.palpalis, this fly cannot be eliminated by clearing only the lower share, but the high trees must be cleared as well.

In Nyasaland. Dr. Lamborn has succeeded in breeding a small Chalcid parasite of Glossinu (Syntomosphyrum glossing) in thousands. He is now able to get them to lay their eggs in the puparia of various common Muscid flies, so that they can easily be bred in numbers outside the flv belt. This will greatly facilitate the trans- portation of the parasites to other areas.

Bulletin of Entomological Research.-During the half year another volume No. XII.) of this periodical has been completed, and the following is a statement of the cost of production and the sales:-

Printing and Paper Illustrations

Postages

£8. d.

523 17 0 Subscriptions and Sales 165 18 5 Advertisements...

35 2 6

£724 17 11

a. d. 213 16 9

8 12

6

£212 9 3

Deficit

512 8 8

£724 17 11

The number of subscribers again shows an increase, being 212, as compared with 194, 189 and 177 in the three preceding years respectively. There has, however, been a drop of over £50 in the sales of separate parts and back numbers as compared with the previous year, while the illustrations have cost about £40 more, so that the deficit is greater by about £90.

APPENDIX I.

STATEMENT OF RECEIPTS AND EXPENDITURE FOR THE HALF-YEAR ENDED 30TH SEPTEMBER, 1922.

Government Grants Interest and Dividends Bulletin of Entomological Research Review of Applied Entomology Salaries

Carnegie Fund Library

Queen's Gate Office Travelling Expenses Office Furniture Translations

General Expenses Sundry Publications Provident Fund Camp Equipment Export of Parasites

APPENDIX II.

Receipts.

£ 8. d. 7,021 7 1 156 16 10 98 8 3 122 2 9

Expenditure.

£ 8. d.

54 18 5 93 10 3 2 3.615 8 1,075 0 0 116 12 5 215 16 11

3 4 8

302 12 7

5

3 17

35 15 1

10 0 0

£7,408 14 11

20 5 3 704 13 8

50 7

6,292 1 11

1

General Financial Position as at 30th September, 1922.

Cash in hand :-

Invested in 4 per cent. Funding Loan

Cash on deposit

Cash with Crown Agents ...

Cash receivable :-

Government Grants unpaid Interest and Dividends, say Estimated liabilities for remainder of financial year:- Salaries for seven months Stationery Office

(April, 1920, to March, 1922) Review (14 parts and indices) Bulletin (5 parts and index) Sundry Publications

£

s. à.

8. d. £

2,500 0 0 5,000 0 0 390 11 10

4,017 0 0

2,725 0 0

OOOD

1,800 0 0

710

0 0

50

0 0

5,550 0

0

120 0 0

PUBLIC RECORD OFFICE, LONDON.