INSECUTOR INSCITI^ MENSTRUUS 131 



i?3 ; petiole of cell M^ short, about two-thirds of m; ni-cu 

 punctiform. 



Abdomen dark brown, the basal tergite pale brownish buflf. 

 Hypopygium simple, the ninth tergite with a deep and very 

 narrow V-shaped notch, the lateral lobes densely covered with 

 coarse, black bristles. Ninth pleurite incomplete ; inner pleural 

 appendage shaped as a long, chitinized beak jutting into the 

 ninth tergite, the proximo-caudal face provided with minute, 

 blackened points. Ninth sternite with a narrow and profound, 

 parallel-sided, median notch. Eighth sternite unarmed. 



Habitat. — New Zealand. 



Holotype, S (from Osten Sacken's collection). 



Paratypes, 2 ^ s, Tisbury, July 10-August 3, 1912 (A. Phil- 

 pott). 



Macromastix zeylandiae, new species. 



Antennae of the male short ; mesonotal praescutum light 

 gray, with four narrow, dark brown stripes; wings light gray, 

 stigma brown ; second anal cell comparatively broad ; abdomen 

 with a broad, dark brown median stripe that practically covers 

 the terminal segments ; ninth tergite of the male hypopygium 

 with a deep V-shaped median notch. 



Male. — Length about 10-11 mm. ; wing, 13.3-13.5 mm. 



Frontal prolongation of head rather long, light bronwish yel- 

 low ; nasus long and slender ; palpi short, dark brown. An- 

 tennae of the male short, the scape brownish yellow, the flagel- 

 lum dark brown ; the antenna is shorter than the combined head 

 and frontal prolongation ; flagellar segments oval. Head ful- 

 vous, sparsely white pollinose, especially adjoining the inner 

 margins of the eyes. 



Mesonotal praescutum light gray, especially behind, the 

 humeral angles narrowly more yellowish, with four narrow, 

 dark brown stripes, the interspaces with short, pale hairs ; 

 scutal lobes gray, darker medially ; scutellum and postnotum 

 brownish yellow. Pleura pale, with two indistinct, grayish, 

 longitudinal stripes, the surface sparsely pruinose. Halteres 

 light brown, the knobs slightly darker. Legs with the fore coxae 



