The paper shows some geographical informations about the State of Ceará, Brasil, that is divided in 23 micro-regions and 141 counties. In 129 of these counties were collected triatomines (91,5%), according all the informations published from 1957 to 1974. The main species is the Triatoma brasiliensis, semi-domestic, 1,0 to 40,4% of them infected. The second species is the Triatoma pseudomaculata (68,8% of the counties); the infection rates are between 0,3 and 7,1%. The third species is the Panstrongylus megistus (61,7% of the counties) with rates of intection between 3,9% and 25,9%. The fourth species is the Rhodnius nasutus (17,7% of the counties) infected 1,0%. The last species, Panstrongylus lutzi, a sylvatic, is seen inside houses in 18,4% of the counties, but only adult forms and showing high rates of intection (17,9%). The most infected micro-regions of the State are: "sertão" of Senador Pompeu, "sertão" of Inhamuns and "baixo " Jaguaribe.