31 



While all species of Glossina need shade, G. tnorsitans does not 

 require to be near water, as is the case with G. palpalis, which further 

 requires a moderately hot, damp temperature. G. morsitans is 

 therefore to be found only in the woodland, while G. palpalis occurs 

 in the forest near water. The Lomami district varies in altitude from 

 about 1,500 feet in the north to about 3,600 feet in the south. Though 

 forming part of the Katanga administration, Lomami is distinguished 

 by its geological and botanical features. As regards the latter, 

 Katanga is characterised by an almost continuous woodland, broken 

 only by grassy plains on the very high plateaus. This woodland is 

 only found on the south-eastern edge of the Lomami district, the 

 remainder of which is a more or less typical savannah w^ith areas of 

 forest along the rivers and in the lowlands. In certain parts, areas of 

 woodland are met with, but they are isolated and do not cover large, 

 continuous stretches, as in Katanga. 



Pending the issue of a special report, notes are given on the limits of 

 G. morsitans and of the dominant type of vegetation which are made 

 clear by the map accompanying the report. Though G. morsitans is 

 plentiful between the Luvidjo river to Ankoro, there are no permanent 

 streams, though the country is typical woodland abounding in game. 

 During the dry season there is no water near the road for a distance 

 of about 21 miles and yet G. morsitans was seen in greater abundance 

 on this plateau than anywhere else. On the whole the limits of the 

 woodland correspond w^ith those of G. tnorsitans and a gradual change 

 of the former indicates a similar one in the numbers of the latter. In 

 conclusion it may be said that the western limit of G. morsitans in this 

 part of Africa coincides with the disappearance of the woodland. 

 The author therefore points out that M. Bequaert was in error in 

 putting the Lualaba River as the western limit of this fly, which 

 extends in suitable localities for 70 miles or more to the west of that 

 river. 



ScHWETZ (Dr. J.). Quelques Observations Pr61iminaires sur les Moeurs 



de la Glossitm brevipalpis. [Preliminary Observations on the 

 ^\ Habits of Glossina brevipalpis.} — Bull. Entom. Research, London, vi, 

 ^ no. 3, December 1915, pp. 289-292, 1 map. 



Without a knowledge of the peculiar habits of Glossina brevipalpis, 

 the existence of this fly can only be discovered by chance. It remains 

 inactive and hidden throughout the day, except after sunrise and more 

 especially before or after sunset. It also flies close to the ground, so 

 that Europeans are less likely to notice its presence than the bare-legged 

 natives. It needs shade and its requirements as regards water are 

 mid- way between those of G. morsitans and G. palpalis. Artificial light 

 by night causes G. brevipalpis to become extremely active, which is not 

 the case with G. palpalis. G. brevipalpis is less voracious than G. pal- 

 palis, and among over 1,000 specimens only two or three were found 

 with their abdomens distended with ingested blood, and only three 

 females were taken. In the Belgian Congo, this species had been 

 taken in South Katanga and on the west coast of Lake Tanganyika, 

 but had not previously been recorded west of the Lualaba, 



