135 



Eiver and probably beyond it. This belt is very lightly infested. 

 Cases of trypanosomiasis amongst cattle on farms in the Melsetter 

 district are apparently due to an incursion of fly from this belt up the 

 wooded river valleys during the summer months. It is suggested that 

 infection might be avoided by using the grazing on the eastern side 

 of the farms during the winter and by moving the cattle to the western 

 side for the summer. The transference should be made before the 

 commencement of the rains. There is no danger of an extensive 

 invasion of this portion of the Melsetter district by tsetse. The 

 Lusitu valley is sufficiently wooded in many places to become a perma- 

 nent fly-belt for some miles, but owing to scarcity of game, except 

 bushbuck, along this well populated river, the suitability of conditions 

 there is doubtful. The fly has apparently been spreading slowly 

 westward during recent years and it is probable that the infestation 

 of the country near the Rhodesian border will become intensified 

 year by year, if conditions remain as at present. It is considered that 

 the best protection against the fly would be the clearing of the forest 

 from and in the neighbourhood of the affected farms. There is at 

 present no danger of an invasion of Rhodesian territory by fly moving 

 up the Sabi river valley. 



Hesse (E.). Gaulleryella anophelis, sp. n., Schizogr6garine Parasite des 

 Larves d' Anopheles bifurcatus, L. [Cmdleryella anophelis, sp. n., 

 a Schizogregarine Parasite of the Larvae of Anopheles bifur- 

 catus, L.] — C.R. Hebdoni. Acad. Sci., Paris, clxvi, no. 14, 8th 

 April 1918, pp. 569-572. 



About fifteen per cent of the larvae of Anopheles bifurcatus, L., 

 collected by the author from the immediate neighbourhood of Grenoble 

 were found to be parasitised by a new species of Schizogregarine. 

 This organism, which so closely resembles Caulleryella aphiochaetae, 

 Keilin, as to be included in the same genus under the name C. anophelis, 

 is distributed throughout the entire length of the mid-gut. In the 

 same host free sporozoites are found side by side with ripe cysts and 

 gregarines in all stages of development. 



Blau ( — ). Die planmassige Insektenbeliampfung bei den Russen. 



[The Campaign against Insects in Russia.] — Zeitschr.f. Hyg. u. 

 Infektionskr., Leipzic, Ixxxiii, no. 3, 3rd May 1917, pp. 343-382. 



This article is mainly composed of notices of measures against 

 insects as practised and recommended not only in Russia but in 

 Germany and elsewhere. As a measure against lice Carpathian 

 herdsmen dip their linen in melted butter, which is supposed to act 

 mechanically by preventing the deposition of the eggs. An insecticide 

 recommended is a solution containing 65 parts of naphtha soap and 

 35 parts of cresol. This is used, diluted to 10 per cent, strength, for 

 rinsing linen. 



Takatsuki (A.). An Essential Property of Petroleum for Mosquito 

 Control. — Kyoto Igaku Zassi, Kioto, xiv, no. 7, November 1917. 

 [Japanese Text ; Author's Summary p. 84.] 



As a result of experiments with petroleum (kerosene, light and 

 heavy oils) in the destruction of various species of Culicines in their 



