Abstract
Seasonal prevelence of mosquitoes were studied during the period from 1952 to 1953, in Yonago City. 1. Four genera, 14 species of adult mosquitoes were collected in the houses and Culex pipiens, C. tritaeniorhynchus and Anopheles sinensis occupied the great majority of the specimens (80-90%). 2. In 1952, the peak of seasonal population curves of C. pipiens lied on the latter part of July, while in 1953, it lied on the middle or latter part of June. 3. Of C. tritaeniorhynchus and A. sinensis, it lied during the period from the latter part of July to the middle of August.
