MUSCID^: THE BLOOD-SUCKING MUSCID^ 173 



untried on any a priori grounds. The same remark applies 

 to the use of ointments and lotions containing essential oils 

 and insecticides; all these things should be tried where 

 people can be induced to employ them, for there really 

 seems no reason why men should not turn themselves into 

 " natural enemies " of any aggressive insect by these passive 

 means. 



Certain zealots have recommended that the flies should 

 be attacked, or at any rate disarmed, by the extermination 

 of the wild animals upon which they feed, to their infection. 

 This is the method of King Josiah in dealing with the 

 abominations of Ashtoreth and Chemosh and Milcom, with 

 a vengeance; and in the present state of our knowledge 

 should certainly be discouraged by every medical officer as 

 an idea beyond measure inhuman and impious. Of course 

 if in this connexion sentence could with justice be pronounced 

 against any particular species of animal that is itself directly 

 dangerous to man (such as the crocodile), it could be executed 

 without remorse. 



Glossina palpalis var. wellmani, Austen. 



This variety is, according to Austen, found in Angola, 

 Gambia, the Katanga district of the Congo Free State, the 

 Matondwi Islands of Lake Tanganyika, and elsewhere. It 

 is said to be distinguishable from typical G. palpalis by a 

 reduction of the longitudinal markings of the thorax {cp. 

 Fig. 68), and to graduate into the typical form. 



Glossina fuscipes, Newstead. 



This supposed species is founded upon a single male 

 specimen from the Nile Province of Uganda. It is said to 

 be "readily distinguished from G. palpalis by its much 

 smaller size, by the uniformly infuscated or dusky legs, and 

 by the dusky-grey thorax." 



Glossina maculata, Newstead. 



This supposed species is founded upon a single female 

 specimen, and is said to differ from G. palpalis in having the 

 thorax, legs, and abdomen spotted. Messrs Austen and 

 Waterhouse consider that the spots are adventitious. 



