194 



13. A. immacidatus. — Ash-grey in colour. 

 Slight apical bandings to tarsi. Palpi and pro- 

 boscis lighter at apex. Ennur, Madras. 



14. A. aitkenii. — Uniformly dark. No mark- 

 ings on palpi or legs. Bombay Presidency. 



15. A. stigmaticus. — Light brown ; tarsi un- 

 handed. Australia. 



16. A. annulipalpis. — Tarsi banded. Last 

 tarsus pure white. S. America. 



Genus Myzomyia. — To this genus belong those 

 species which are associated in the tropics with 

 the most severe endemic malaria, e.g., M. funesta 

 in Africa and M. listoni and M. culicifacies in 

 India. The group includes, however, several 

 species, one at least of which has, as far as our 

 knowledge extends, no power of transmitting 

 malaria in nature, viz., M. rossii. 



The malaria transmitters form a natural 

 group : they are small, dark mosquitoes, with 

 unhanded legs, and they breed in fresh natural 

 waters, e.g., streams, river beds, etc. ; whereas 

 we also have in the group domestic mosquitoes, 

 i.e., those that breed in foul pools about houses. 

 M. rossii is the type of this class. 



Whether in this genus any others than the 

 three mentioned above convey malaria there are 

 at present no facts to shew, and the larval characters 

 of only the Indian species are at present known. 



The type species is M. funesta, which is a 

 typical spring and fresh- water breeder. It is 

 noteworthy that M. funesta is associated with a 

 higher malarial endemicity than P. costalis, 

 which is a typical domestic mosquito breeding in 

 foul pools. 



