Yellow. Legs concolorous with body or else apices of all tarsi light brown. Wing veins yellow. Dimensions: Body 3—3.5 mms. Wing 3—3.25 mms.

Front and face in profile the same as slossonae n. sp. with similar variation. Third antennal segment about twice as long as wide (1/2.0–1/2.3), infuscation subequal on both sides, covering apical fifth to third above and third to two thirds below. Arista with hairs arranged as in setipalpis n. sp. Infuscation of vertex roughly diamond-shaped, more or less pointed in front, longer than wide, not more than twice as long as triangle.

I first made the acquaintance of Papilio brevicauda in Cape Breton in the summer of 1936 when engaged on an Insect Faunal Survey of this region. We (i.e., my assistant Mr. T. N. Freeman and myself) had made our head-quarters at the picturesque town of Baddeck on Little Bras d'Or Lake and on the afternoon of July 12th I decided to row over to the small island opposite the town, which forms the eastern side of the harbour; this island is heavily wooded down to the water's edge except for a small strip of sandy beach on the Irest side, which is grown over with various coarse grasses and numerous low plants, chief among which is a flourishing colony of lovage (Ligusticum scothicum), a plant which to my knowledge does not accur on the mainland in this region.

The purpose of this paper is to provide a name for an undescribed species of the platygasterine genus Allotropa which has been encountered in Canada as a parasite of the mealybug Phenacoccus aceris (Sign.). Brief notes are also given on the single previously known Nearctic species of Allotropa and on another species which was erroneously described in that genus.

Soon after the discovery of the mealy bug Phenacoccus aceris Sig. in the orchards of Nova Scotia in 1932, a parasite of much importance was found attacking this pest. This is a small hymenopterous species described in this issue by Dr. C. F. W. Muesebeck as a new species, Allotropa utilis Mues.

The family Chrysomelidae was established by Redtenbacker in 1846, but its principal subdivisions and its definite limits were not fixed until 1848 when that eminent French entomologist, Lacordaire, gave us his “Monographie des Phytophages”.