242 DIPTERA OF AUSTRALIA, 



longitudinal rows of yellow hairs ; pleurae, pectus, scutellum, and 

 metanotum yellow, the latter tinged with brownish. Halteres 

 pale yellow. Abdomen short, yellowish-green, densely clothed 

 with short pale yellow hairs. Legs yellow, densely haired. 

 Tibial spurs black. In fore legs metatarsus almost twice length 

 of tibia. Wings longer than body, pellucid, almost hyaline, with 

 rosy and aurichalceous reflections ; costal, first and third longi- 

 tudinal, and basal portion of fourth and whole of fifth longi- 

 tudinal vein distinct, brownish-yellow. Costal and third 

 longitudinal veins meeting at apex of wing; auxiliary vein 

 very indistinct, joining costa a short distance beyond middle 

 cross-vein ; second longitudinal vein scarcely determinable, 

 running close to first longitudinal ; fourth longitudinal very pale 

 and indistinct, disappearing entirely a short distance before 

 wing-margin, its tip nearer to tip of costal than to that of 

 anterior branch of fifth longitudinal fork ; posterior branch of 

 latter less than f the length of anterior branch. 



Hah. — Lawson, Blue Mountains, N.S.W. (Masters). January. 



231. Chironomus orarius, sp.n. 



(J. — Length of antennae 0-037 inch ... 0*92 millimetre. 



Expanse of wings 0-075 x 0-020 ... 1-89 x 0-50 



Size of body 0-090x0 016 ... 2-27x0-40 



9. — Length of antennae 0-025 inch ... 0*62 millimetre. 



Expanse of wings 0-105 x 0-025 ... 2-67 x 0-62 



Size of body 0-105 x 0016 ... 2-67 x 0-40 



(J and 9. — Entirely yellow, except that flagellar joints in $ 

 antennae ochreous-brown or light brown. Antennae in 9 with 

 long pale yellow verticils. Thorax with three longitudinal rows 

 of long yellow hairs. Abdomen with slightly greenish tint in 9 ; 

 in both sexes about three times the length of thorax; densely 

 clothed with pale yellow hairs; anal joint and holding-forceps of 



