278 Insecta. 



905) Fell, T. E. Notes on Tsetse-flies and on prophylactic measures 

 against sleeping-sickness in the Western Province of Ashanti. In: 

 Bull. Ent. Research, Bd. m, Heft 3, S. 227 — 231, 1912. 



The writer has found Glossina fusca and Gr.palpalis both prevalent throughout 

 the W. Province of Ashanti. The niost favourable type of country for them seems 

 to be the smaller forest occurring between dense jungle and more open country, 

 scrub 3 or 4 feet in height being sufficient to harbour them: they are also found 

 in dense forest. G. pallicera occurs in similar localities but is very much rarer. 

 All these, though prevalent near water, also occur far from water. 6r. longipalpis 

 is common in more open country. The genus Glossina disappears almost entirely 

 in the dr}' season, December-March: the first heavy rain-showers cause various 

 Tabanidae to appear, but Glossina does not appear tili the rains are well esta- 

 blished: it is then prevalent throughout the wet season, not fluctuating in numbers 

 as do certain Tabanidae. Clearing of Vegetation round dwellings as a preventive 

 measure is discussed: the writer considers that unless a Clearing be very effec- 

 tively maintained, the secondary growth which arises is more favourable for har- 

 bouring Glossina than the original forest. Clearing round sources of water-supply 

 must also be done with great caution lest the supply be improverished. Occur- 

 rence of sleeping sickness and other points are dealt with. 



H. Scott (Cambridge). 



906) Koch, Bericht über Fangversuche mit Cleves Tsetseleim. In: Arch. f. 

 Schiffs- und Tropenhyg., Bd. 16, S. 362—379, 1912. 



Zur Vernichtung von Tüetse-Fliegen war von Cleve eine Art von Leim vorgeschlagen 

 worden, der auf Tücher aufgestrichen von Menschen und Tieren in fliegenreichen Gegenden 

 getragen werden soll. Diese Methode wurde von Koch auf Anordnung des Leiters der 

 Schlafkrankheitsbekämpfung in Deutsch-Ostafrika nachgeprüft und, wie vorauszusehen, als 

 wenig rationell befunden. Schellack (Berlin). 



907) Lloyd, LI., Notes on Glossina morsifans, Westw., in the Luangwa 

 Valley, Northern Rhodesia. In: Bull. Ent. Research, Bd. III, Heft 3, S. 233 

 bis 239, 1912. 



Glossina morsitans, the only Glossina met with in the Luangwa Valley, is 

 almost universally distributed in that valley but is not offen met with in the 

 immediate vicinity of the river. It is numerous in the early part of the dry season, 

 it then decreases until the commencement of the rains, when it again increases. 

 It usually becomes active at sunrise, and disappears during the hottest hours of 

 the day (except in the shade), recommencing to bite as the temperature falls in 

 the afternoon and continuing to bite tili after sunset: it is occasionally attracted 

 by lamplight. The sexes are bred in the laboratory in equal numbers; but when 

 the fly is collected in the field, it offen happens that only very few $ are ob- 

 tained among many cT. When a swarm follows an animal, it is found that among 

 the flies which actually bite 5 are as numerous as d, but there are in the swarm 

 many c? which do not bite, so that the great majority of the swarm consists of cf. 

 There is no evidence that the flies take other food than blood: but they have 

 been observed round puddles, and may possibly take up a small quantity of water. 

 An Asilid fly was observed to eat a Glossina: and a horde of driver-ants (Dory- 

 linae) which entered the laboratory destroyed many flies. Results of experiments 

 showing the effect of temperature-changes on the length of the pupal period, etc., 

 are given in tabular form. H. Scott (Cambridge). 



908) Moiser, B. (West Afric. Med. Service), Notes on the habits of Glos- 

 sina tachinoides, near Geidam, Bornu Province, Northern Nigeria. 

 In: Bull. Ent. Research, Bd. III, Heft 2, S. 195—202 (with map), 1912. 



