Hutton. — On the Diptera brachycera of Neiv Zealand. 45 



Key to the New Zealand Geneka. 



.Abdomen oval or oblong, not ourved under at tbe apex. 

 Costa of the wing with a conspicuous brittle. 

 Seccnd joint of the arista elongated 

 Second joint of the arista quite short 

 Costa of the wing without a conspicuous bristle. 

 Abdomen haiiy, and with macrochsetse. 

 Facial ridges unarmed. 



First posterior cell ending near the tip 



of the wing 

 First posterior cell ending considerably 

 before the tip of the wing. 

 Eyes hairy. 



Second joint of arista twice 

 as long as broad. 

 Abdomen oval, tawny 

 Abdomen oblong, blue 

 Second joint of arista quite 

 short 

 Eyes bare, or nearly so. 

 Front smooth 



Front longitudinally grooved. 

 Mid-abdominal segments 



with dif-cal setaa 

 Mid-abdominal segments 

 without discal setae 

 Facial ridges armed with a row of strong 

 brutles. 

 Eyes bare ; antenrse oovered 

 Eyes hairy ; antennae exposed 

 Abdomen glabrous, without macrocbaeiae 

 Abdomen nearly cylindrical, curved under at the apex . . 



Calcager. 

 Tryphera. 



Uacquartia. 



Hystiicia. 

 Occisor. 



Kemoicea. 



Tachina. 



Proscissio. 

 Peremptor. 



Cerosomyia. 

 Phorocera. 



(hjnuiophania. 

 Phania. 



The following is a systematic arrangement of the genera 

 according to the plan followed by Mr. W. D. Coquillet in his 

 •" Eevision of the Tachinidae of America north of Mexico" 

 (1897) :— 



First posterior cell ending close to the 

 tip of the wing. 

 Abdomen destitute of macrocbaetae. 

 Cheeks bare 

 Cheeks with bristles 

 Abdomen bearing macrochaetae ; 

 cheeks bare 

 First posterior cell ending seme dis- 

 tance before the tip of the wing. 

 Cheeks bare. 



Vibrissse distinctly above the mouth. 

 Eyes bare 

 Eyes hairy 

 Vibrissse on a level with the an- 

 terior border of the mouth. 

 Eyes bare 

 Eyes hairy 

 Cheeks hairy ; vibrissae above the 

 mouth 



Phania. 

 Gymvophania. 



Macq u a rtia , Tryphera. 



Calcager, Peremptor. 

 Nemonea, Hystricia. 



Tachina, Proscissio, Cerosomyia. 

 Phorocera. 



Occisor. 



