Mr. J. R. Mallocli on Exotic Muscaiidfc. 573 



conspicuously marked with darker brown ; scutellum and 

 postnotuni li<:;lit brown, the posterior margin of the latter 

 darker. Thorax with very short setse. Pleura grey, varie- 

 gated with brown, especially on the ventral sclerites ; dorso- 

 pleural membrane obscure yellow. Halteres brown, the 

 knoi)s obscure brownish yellow. Legs with thecoxie brown ; 

 trochanters greenish ; femora yellowish brown, the tips 

 rather narrowly but conspicuously blackened ; tibiie pale 

 yellowish brown, the tips very narrowly blackened; basal 

 tarsal segment bright brown, the terminal segments black- 

 ened. Wings strongly infumed, the caudal margin fading 

 into grey ; wing- base and cells C and Sc darker brown ; 

 stigma oval, dark brown ; a conspicuous brown cloud on the 

 basal deflection of /?4+5 and r-m ; a brown cloud in the 

 centre of cell R ; a very small pale area before the stigma; 

 veins dark, the tips of the medial and anal veins subobsolete. 

 Venation : cell 1*^ M^ narrowed distally ; petiole of cell Mx 

 a little less than twice the length of m ; m-cu distinct; cell 

 2nd A broad. 



Abdominal tergite 1 and the lateral margins of 2 reddish 

 yellow, the median area dark brown ; remaining tergites 

 shiny dark brown, the caudal margins of the segments 

 narrowly blackened ; hypopygium dark. 



Hub. New Zealand (South Island). 



Holotype, J, Dunedin, Otago, December 22, 1921 (G. 

 Howes). 



LX. — ExoHc Muscaridffi {Diptera).—YlU.^ By J. R. 

 Malloch, Bureau of Biological Survey, Washington, D.C. 



Subfamily Puaoniinm. 

 Genus Xenosia, Malloch. 



I erected this genus for the reception of one species, 

 ungulata, Stein. In my original definition of the genus, I 

 included the presence of fine hairs on the upper margin 

 of the hypopleura in front of the spiracle as one of the 

 characters of the genus. This applies to the genotype, 

 but not to niorosa. Stein, whicii I consider may properly 

 be located in this genus. This character, therefore, must be 

 eliminated. 



* For Part VII., see Auu. Sc Mag. >'ut. Hist. (9) x., October lOL'L', 

 pp. 379-391. 



Ann. dc Mag. N. Hist. Scr. 0. Vol. x. 39 



