Hutton. — Un New Diptera. • 181 



Genus Chironomus, Meigen, 1803. 



" Antennae 14-jointed in the male, 7-jointed in the female. 

 Thorax usually with three stripes. Wings naked. Costal 

 vein not extending beyond the tip of the third longitudinal. 

 Fore metatarsus longer than, or occasionally as long as, the 

 tibia. Anal joint of the male abdomen longer than broad, the 

 forceps generally filiform or falcate " Skuse). 



Key to the Species. 



Thorax pale, with dark stripes. 

 Wings without spots. 



Tip of subrnarginal cell acute . . .. C. zealandic 



Tip of subrnarginal cell rounded . . . . C. lentus. 



Wings with two small blaok spots . . . . C. opivnts. 



Thoiax blackish. 



Third longitudinal vein slightly curved near the tip C. vavidus. 

 Third longitudiual stroDgly curved ntar the tip .. C. ignavus. 



Chironomus zealandicus. 



C. zealandicus, Hudson, Man. N.Z. Ent., p. 43, pi. iv., fig. 2 



(1892). 



First joint of the antennae pale-yellow, the rest brown, 

 with brown plumes in the male. Clypeus and palpi dark- 

 brown. Thorax pale-yellow, with three longitudinal dark 

 bands, either fuscous or dark- fulvous. The lateral bands 

 start near the middle and gradually narrow to the posterior 

 margin, the central one beginning at the collar and ending 

 near the middle, but continued as a narrow pale-brown 

 median line to the posterior margin. Pleurae with an oval 

 brown spot under the wing. Scutellum pale-yellow. Meta- 

 notum brown. Abdomen brown, with long yellow hairs; 

 each segment bordered posteriorly with pale-yellowish, 

 except the second, which is almost entirely brown. Legs 

 pale-yellow, each joint generally minutely tipped with 

 brown ; the last joints of the tarsi slightly fuscous. Fore 

 metatarsus about one and a third times the length of the 

 tibia ; intermediate tibia less than twice the length of its 

 metatarsus ; each joint of the tarsi shorter than the ones 

 before it. Wings hyaline, glabrous ; the costa, cross-vein, 

 and internal portion of the fourth longitudinal brown. Auxi- 

 liary vein joining the costa some distance outside of the 

 cross-vein. Second longitudinal indistinct aud close to the 

 first. Third longitudinal meeting the costa a little before the 

 apex of the wing ; submarginal cell acute at the tip. Fourth 

 longitudinal reaching the margin of the wing a little below 

 the apex. Length, 6-8 mm. ; wing, 5^ mm. 



Hab. Wellington (Hudson) ; Chnstchurch (F. W. H.) ; 

 Auckland (Suter). 



This species is allied to C. nepeanensis, Skuse, but 



