The unusual and prolonged drought that we have experienced this year has had a marked effect upon the mosquitos. So much so, that while last year I found no difficulty in obtaining any of the eleven species which so far have been found to exist in this locality, yet for many weeks now it has been impossible to obtain any but a few Anopheles maculipennis (adults), Anopheles bifurcatus (larvae), Culicella morsitans (larvae, pupae, and adults), and Culex pipiens (larvae, pupae and adults).