NEW OB LITTLE-KNOWN eEANE-FLIES.— ALEXANDER. 63 



Frontal prolongation of the head short and stout, obscure yellow; palpi 

 brown. Antennae short, pale brownish yellow, the distal flagellar segments long- 

 cylindrical. Head yellow. 



Mesonotum and pleura dull yellowish, the prseseutum without distinct 

 stripes. Halteres pale brown. Legs with the coxae and trochanters dull yellow, 

 the remainder of the legs pale brown, the tips of the femora narrowly darkened. 

 Wings with a strong brownish yellow tinge, the costal and subcostal cells more 

 saturated; stigma conspicuous, darker brown. Venation: Basal deflection of 

 Ciil at about one-third the length of cell 1st M2 ; cell 2nd A very narrow. 



Abdomen obscure yellow, the lateral margins of the tergites narrowly and 

 indistinctly dark brown ; the dorso-median stripe of tortilis is lacking ; segments 

 7 and 8 brown; hypopygium entirely pale yellow, including the ninth tergite. 

 Male hypopygium of the semi-inverted type of 31. tortilis. Ninth tergite not so 

 tumid as in tortilis, with a broad and deep U-shaped notch, the dorsal surface 

 provided with numerous stout setae, the free ends of the tergite produced caudad 

 and slightly inward into a subspatulate, flattened lobe. Ninth sterno-pleurite 

 with a large, square median notch ; near the dorso-caudal angle with a pencil of 

 about seven powerful bristles that are directed dorsad and caudad. 



Habitat: Queensland. 



Holotype, S' , Brisbane (H. Hacker). 



Type in the collection of the Queensland Museum. 



This interesting species is named in honour of the collector, Mr. Henry 

 Hacker, Entomologist of the Queensland Museum. It is closest to M. tortihs but 

 is readily separated by the diagnostic characters listed above. 



