Mabshall. — On Neio Zealand Dijjtera. 303 



•covered with black hairs. Scutelkim dark-brown, with strong 

 hairs on its posterior margins. Metathorax yellow. Pleurae 

 dark -brown, covered with slender black hairs. Abdomen 

 almost black, mottled with very dark brown ; margins of 

 some of the segments lighter. Legs robust ; coxae light- 

 yellow, but brown on the posterior margin ; femora rather 

 ■expanded, greyish-yellowy with two black spots on the pos- 

 terior side and a conspicuous black tip on the posterior legs ; 

 tibiae dull-yellow, with a black tip covered with longitudinal 

 rows of black hairs and spines of two sizes, the longer ones 

 being orange -red ; spurs long, orange -red in colour ; tarsi 

 darker than the tibiae, several rows of line spines on the inner 

 side. Wings very broad, microscopically pubescent, with a 

 deep-yellow tint, but the larger part coloured almost black ; 

 a dark patch surrounding marginal cross-vein, which extends 

 downward and spreads out widely, covering all the posterior 

 portion of the wing, but becoming lighter as the margin is 

 approached; this becomes darker nearer the apex and spreads 

 up again to the second longitudinal vein, but has an irregular 

 outline, becoming very much narrower at second longitudinal 

 and reaching costa at the end of first longitudinal, the apex 

 being yellow\ First and second longitudinals brown ; the 

 others very strong and black ; petiole of second submarginal 

 cell very short, the apex of the inner marginal cell lying over 

 the base of the second posterior. 



I have only one specimen of this fine insect. It was taken 

 in bush on the Euahine Mountains, in January. 



Mycetophila fagi, n. sp. 



Length of antennae, 0-055 ; size of body, 0-148 x 0-034 ; 

 expanse of wing, 0-127 X 0-055. 



Antennae slender ; joints of scapus long, long black 

 setae on anterior portion of last joint ; flagellum nearly 

 cylindrical, brown, the basal portion of each joint being 

 lighter than the apical portion, covered all over with short 

 pubescence. Palpi light-yellow. Head yellow, dark near the 

 two ocelli. Thorax yellow, without any markings, but orna- 

 mented with a few long and many short black hairs. Scutel- 

 lum yellow-, with long black bristles on the posterior margin. 

 Metathorax and pleurge dark -yellow. Pedicel of halteres 

 nearly white ; club light-yellow, pubescent. Abdomen dark- 

 brown, the posterior portion of each segment light -yellow. 

 Forceps of male brown, with black setae. Legs rather short ; 

 coxae pale -yellow, with a few black setae; femora straw- 

 coloured, with black hairs ; tibiae straw-coloured, with long 

 black spines but no smaller ones, and a fringe at the distal 

 end; spurs long, straw-coloured, but densely covered with 

 black pubescence; tarsi rather stout, with short black spines 



