followed on costa by a pale yellowish spot, and the space between it and the suffused median line is more distinctly yellow, especially below discal spot; an oblique pale yellowish mark on costa before apex, terminating in a rather metallic white dot; three slender longitudinal leaden-metallic streaks extending from discal spot to hindmargin, lowest one not reaching discal spot; a leaden metallic line within the second double tranverse line from below middle almost to inner margin; three small quadrate black spots on hindmargin near together below middle: cilia violet-metalliegrey, with a deeper basal line. Hindwings grey, with a dark fuscous hindmarginal line: cilia grey-whitish, with an indistinct darker line. The smaller species of the genus; it is a rather brightly-marked insect, with considerable affinity to D. auriscriptella, but darker, and with the first line strongly dentate beneath. Two specimens taken at Auckland amongst scrub in January. 3. Dipt. astrosema, n. sp. Male.—15–16 mm. Head white, ochreous-tinged behind. Palpi dark fuscous, internally and beneath white; apex of maxillary palpi white. Antennæ whitish-ochreous. Thorax light ochreous, with a few white scales. Abdomen and legs whitish. Forewings triangular, broad, costa almost straight, somewhat arched towards apex, apex rounded, hindmargin oblique, sinuations moderate; light rather bright ochreous-brown, mixed with darker in disc and towards apex; a small very suffused white spot beneath base of costa; a triangular snow-white blotch in disc towards base, its apex touching base of wing, its sides parallel to costa and inner margin, its base resting on first transverse line; first transverse line slender, dark fuscous, from costa at ⅓ obliquely outwards to upper angle of white blotch, thence sharply bent inwards and continued to inner margin at ⅓; a moderately large oblong snow-white dark-margined spot in disc beyond middle, parallel to hindmargin, its upper extremity sending a rather long sharp tooth towards costa and another towards hindmargin, its lower extremity sending a third towards anal angle; second transverse line from ⅘ of costa to ⅘ of inner margin, slender, almost obsolete, followed on costa by a suffused white triangular spot, beneath which is a small white suffusion on anterior side of line; a small white spot in apex, and a whitish suffusion in anal angle; four rather indistinct leaden-metallic longitudinal lines between discal spot and hindmargin; three small subquadrate black spots near together on hindmargin below middle: cilia shining white, with a blackish-grey line. Hindwings dull whitish, slightly greyish-tinged, with a dark grey hind-marginal line; cilia whitish, with an indistinct grey line near base.