182 ' Transactions. — Zoology. 



differs from it in the colour of the bands on the thorax and 

 in the fore tibiae not being brown at the base. The Christ- 

 church specimens have the thorax much darker and less 

 distinctly marked than those from Wellington and Auckland, 

 and might, perhaps, be distinguished as a distinct species. 



Chironomus lentus, sp. nov. 



Female. — Antennae tawny, palpi dark-brown, clypeus black. 

 Thorax tawny, with three brown longitudinal streaks each bear- 

 ing a series of tawny hairs ; of these the lateral streaks curve 

 downwards on the sides of the thorax, and the central stripe 

 is narrow. Scutellum tawny. Metanotum dark-brown. Ab- 

 domen brown, with short yellow hairs. Legs pale-tawny, 

 the joints fuscous. Fore metatarsi about one and a half 

 times the length of the tibiae. Intermediate tibiae not much 

 longer than the metatarsi ; each joint of the tarsi shorter 

 than the one before it. Halteres pale-tawny. Wings hyaline, 

 the veins pale-tawny. No spots. Auxiliary vein joining the 

 costa some distance outside the cross-vein. Second longi- 

 tudinal indistinct, close to the first. Third longitudinal vein 

 meeting the costa at the apex of the wing ; submarginal cell 

 rounded at the tip. Fourth longitudinal reaching the margin 

 considerably below the apex. Fork of the fifth longitudinal a 

 little outside the cross-vein Length, 4 mm. ; wing, 3Jmm. 



Hab. Christchurch (F. W. H.). 



Chironornus opimus, sp. nov. 

 Male. — Antennae pale - brown ; clypeus brown. Thorax 

 yellowish-green, with a pair of median dark-brown lines close 

 together, bordered outside with tawny ; also on the sides, in 

 front of the wings, a kidney-shaped dark-brown spot bordered 

 above with tawny. Scutellum pale-green. Metanotum tawny, 

 broadly tipped with dark-brown. Abdomen bright-green, with 

 yellow hairs ; the sixth and seventh segments slightly fuscous. 

 Legs pale-tawny ; the distal end of the fore femora, a band in 

 the middle of the intermediate and hind femora (as well as 

 their apices), a broad band at the proximal ends of the fore 

 tibiae, and narrow bands in the same place of the intermediate 

 and hind tibiae, as well as the three last joints of the fore tarsi, 

 brown. The fore metatarsus is nearly one and a half times 

 the length of the tibia. Halteres green. Wings with two 

 small black spots, one on the cross-vein, the other at the 

 apex of the fourth posterior cell. The membrane bare, but 

 short hairs on the fourth longitudinal vein and on the anterior 

 branch of the fifth. Third longitudinal much curved back- 

 wards near the tip, reaching the costa at the apex of the 

 wing ; the submarginal cell rounded at the tip. Auxiliary 

 vein joining the costa opposite the cross-vein. Fourth longi- 



