The present work can be summarized in the following itens: 1. The ovoposition of the Anopheles (Kerteszia) homunculus and bellator displays a vertical distribution which seems to be determined by special ecological factors. The A. (K.) cruzzi, on the other hand, shows no microclimatic preference. 2. There is no specificity in relation to the Bromeliads for the ovoposition of the Anophelines. What seems to be determinant for the ovoposition is the biotope environment. 3. It is always possible to show that, in the whole area studied, the Bromeliads with large water content present a high incidence of larves. The Bromeliads with a small water volume, though much more numeros, become significantly positives, only when they live on the ground and in dense forest or on the talwegs of zones of sufficiently moved relief. The microclimatic conditions operating in these cases tend to hamper water evaporation, thus warranting a more stable condition for larve beeding. 4. There is a correlation between the periodicity of the Anopheline larves and the imagos captured in the forest. The adults show a uniforme vertical distribuition whereas the larves are distributed in the different levels according to the preferential environment of each species. As far as the practical problem of Malaria control is these regions is concerned, we can state: 5. In the region under consideration only a small number of species of Bromeliads (twelve), precislly the less abundants (about 0,5% of the median occurrence) are to be taken in consideration as effective breeding spots for the Anophelines vectors of Malaria. This makes the problem of malaria control on the region much simpler. 6. The A. (K.) bellator occurs only in very small scale and in limited areas in the whole region studied. Thus only the A. (K.) cruzii which is abundant and distributed in a large area, needs to be taken in consideration in the planes for malaria control in the region. 7. The larves of A. (K.) cruzii though present at all levels in the forest are more abundant at the level where the three branches take origin. Here, also, is where we find the highest frequency of large bromeliads. the destruction of these bromeliads should cause a significant decrease in the number of mosquitoes in the forest. 8. In the areas of sufficiently moved relief, specially in the Itajaí valley, as we have seen the A. (K.) cruzii occurs with high frequency in the bromeliads which are on the ground. In these cases the bromeliads should all be destructed, no matter their size. In conclusion we can say that the destruction of the large bromeliads...