This paper continues the enumeration of the species of Halictus found in Maine, begun in the Canadian Entomologist for February, 1905, page 40.

Halictus similis, Smith, ♀ ♂.— A very common species in this locality, taken from June 19th to August 24th. It visits a great variety of flowers, as the blackberry, Iris versicolor, Sagittaria latifolia, Aralia hispida, Cornus Canadensis, and teh thistles and goldenrods. Professor Cockerell, who has examined Smith's type in the British Museum, states that the Maine specimens agree with it in all the more important characters.