Fam. Ephydrindæ.

Ephydra aquaria.

An aquatic fly abounding on the surface of pools and on the damp banks of streams on the sea-shore. From my observations, they are to be found from January to May (1909). The larvæ live in saline pools on the sea-shore, and have been described by Dr. Benham in the Trans. N.Z. Inst., vol. xxxvii, p. 308.

Domina metallica.

A minute fly about 2 mm. in length. This species is not common, only two specimens having been obtained, during August and September (1908).