Laboratory Culture a N D Life Cycle of Two Species of Mosquito 9 Results

Laurence & Smith (1958) and Laurence, Page & Smith (1962) have reported results of successful large scale rearing, in London, of Mansonia (Mansonioides) africana (Theobald) and M. (M.) uniformis from Africa and M. (M.) uniformis from Malaya. Laurence (1960) also studied the biology of these mosquitoes in the laboratory! Ceylon strains'of M. uniformis and M. annulifera were studied concurrendy with these species in London during the period 1956-1959 and the colony material was used in studies on the age'determination of these mosquitoes (Samarawickrema, 1962). In this paper the results of culture of the two species are discussed first; the culture of the two species in a new medium of liver extract is described next and finally the life cycles of the two species are compared. '