M 65
341. Flushing Tank.
De Villiers flushing tank-construction of which was commenced during 1937, was completed during the year.
342. Four tables are appended. The first gives details of 6,750 anopheline larvae examined microscopically for identification purposes, the second relates to some 1,409 adults hatched out from larvae and pupae, the third summarises the results of precipitin tests on bloods from mosquitos caught in three types of shelters in the village of Kap Lung; while the fourth gives a summary of systematic catches and dissections to ascertain the presence of malarial infection of anophelines caught at Pat Heung Camp from the month of January to August, 1938, in two screened lines. In addition, catching was also done in villages outside the half-mile area around these lines. Of 1,094 anophelines obtained approximately 48 per centum were A. minimus, 27 per centum A. hyrcanus, 19 per centum A. jeyporiensis, 3 per centum A. vagus, 1 per centum A. fluviatilis.
J. B. MACKIE,
M.B., CH.B. (Edin.), D.P.H. (Liv.), D.T.M. (Liv.).
Government Malariologist.
Table XLV.
ANOPHELINE LARVAE EXAMINED MICROSCOPICALLY.
var,
sinensis A. minimus A. aitkenii A. jeyporiensis var. candidiensis A. karwari A. splendidus January 887 140 149 February 246 268 87 21 2 March 112 127 16 April 36 149 50 24 May 71 52 June 37 3 81 July 90 91 37 106 August 8 September 566 301 55 6 128 1,056 October 198 76 19 292 November 277 248 11 51 587 December 929 615 151 101 1,796 Totals 3,457 2,018 689 202 24 2 358 6,750
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