Diptera.] 



SUBANTARCTIC ISLANDS OF NEW ZEALAND. 



145 



Polytocus spinicosta, sp. nov. (Plate IV, figs. 2, 3.) 



Length, 14 ram. ; wings 16 mm. long, with a maximum breadth of 4 mm. 



Colour. — Brownish-yellow ; front of frons and the legs paler. 



Jowls, frons, side and back of head with stout bristly hairs. 



Thorax with short bristles on the disc. 



Wings uniformly suffused with brownish-yellow ; the veins pale ; cross-veins 

 suffused, especially the middle one. 



Legs covered with long hairs in the male and with shorter bristly hairs in the 

 female. The latter has a well-marked comb of long bristly hairs on the underside 

 of the front femora. The preapical bristles on the front and hind legs are long and 

 hairlike, those on the middle legs strong. 



Abdomen very hairy in the male. 



Hab. — Carnley Harbour. 



Type. — Cambridge Museum. 



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. ^'/-^y 



s^^'^-. ^ 



10— s 



