1. Anopheles maculipennis, Meigen.

The larvae are found in the low-lying districts of the Island in shallow pools and irrigation ditches containing a medium amount of aquatic vegetation yet well exposed to sunlight. They are sometimes present along the edges and in the back-waters of drainage canals with an appreciable current, and frequently in slightly brackish(up to 10 per cent. salinity) waters by the sea-shore. They are most plentiful in Lake Antiniotissa among the floating masses of Monostroma (? bullosum, Roth-Wittr.) at the mouths of several fresh-water springs which flow into that shallow and slightly brackish mere from the south.

The adult bites most frequently after sunset and is the principal transmitter of the malarial parasite in the Island.