. Transactions and proceedings of the New Zealand Institute . ural size. iEolis, Cuv. Animal ovate; dorsal tentacles smooth, oval, slender ; papillae simple,cylindrical, numerous, depressed, and imbricated; mouth with a hornyupper jaw, consisting of two lateral plates united above by a ligament;foot narrow; tongue with a single series of curved, pectinated teeth;spawn of numerous waved coils. Molis gracilis, sp. nov. Body small; tail sharply pointed. Gills as long as greatest width ofthe body, papillose, crowded, but placed in three tolerably distinct groupson each side of a broad clear line r
. Transactions and proceedings of the New Zealand Institute . ural size. iEolis, Cuv. Animal ovate; dorsal tentacles smooth, oval, slender ; papillae simple,cylindrical, numerous, depressed, and imbricated; mouth with a hornyupper jaw, consisting of two lateral plates united above by a ligament;foot narrow; tongue with a single series of curved, pectinated teeth;spawn of numerous waved coils. Molis gracilis, sp. nov. Body small; tail sharply pointed. Gills as long as greatest width ofthe body, papillose, crowded, but placed in three tolerably distinct groupson each side of a broad clear line running from the base of the tentaclesto the tip of the tail; oral tentacles subulate, rather distant, about twiceas long as the greatest width of the animal. Tentacles approximate, abouthalf as long as the oral tentacles. Foot expanded, produced in front,margin thin, slightly puckered. Colour—body and foot pale pink; tentacles and gills bright red pro-minently tipped with white. Length, *9 of an inch. Hab.—On Viva, Napier (collected by Mr. A. Hamilton).. 218 Tra nsactions.—Zoology. Art. XXVII.—Description of a new Dipterous Insect. By G. Vernon Hudson. Communicated by T. W. Kirk. [Read before the Wellington Philosophical Society, 9th December, 1882.] This species is parasitic in the common magpie moth (Nyctmera annulata) ; it makes its way out of the insect when in pupa by boring a hole in the hard shell before turning ; the pupa of the fly is dark-brown, with scarcely any trace of articulations ; it remains in ihat state about six weeks. Nemorcca nyctmerianus, sp. nov. Body black with numerous black hairs and bristles ; head with a broad longitudinal furrow between the ocelli extending downwards towards the base of the antennae, covered sparingly all over with black bristles. Eyes, reddish-brown, with a slight golden pubescence. Proboscis black, slender, covered at the tip with tawnybristles; palpi deep black, withone or two short hairs. An-tennae less than three-fourt
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