236 DIPTERA OF AUSTRALIA, 



that of anterior branch of fifth longitudinal fork ; base of the 

 latter situated somewhat beyond middle cross-vein ; its posterior 

 branch J the length of anterior. 



Hah. — Wheeny Creek, Hawkeshury District, and Hexham 

 Swamps, near Newcastle, N.S.W. (Skuse) ', Brisbane, Queensland 

 (taken at light by Mr. H. Tryon). November to April. 



24. Chironomus subdolus, sp.n. 



(t. — Length of antennae 0-055 inch ... 1-39 millimetres. 



Expanse of wings 0-130 x 0030 ... 3-30x0-76 



Size of body 0-200x0-027 ... 5-08x0-68 



Antennae brown, with somewhat bronzy-brown plumes ; first 

 joint of scapus umber-brown. Head pale greenish-yellow with 

 pale yellow hairs. Clypeus and palpi light greenish-brown. 

 Thorax, pleurae, and scutellum pale greenish or greenish-yellow, 

 the former with three ochraceous-ferruginous bands ; pale yellow 

 hairs ; pectus brownish ; metanotum deep brown, pale greenish- 

 yellow anteriorly, and with a very fine pale median line. Halteres 

 very pale green. Abdomen nearly three times length of thorax, 

 prasinous, second to fifth segments with a diamond-shaped olive- 

 brown spot superiorly, last two segments entirely blacki^h-brown ; 

 rather moderately clothed with short pale yellow hairs ; anal 

 joint and forceps dusky brown, with short hairs. Coxae and 

 femora pale greenish-yellow. Tibiae and tarsi of a more ochreous- 

 yellow, joints of tarsi almost imperceptibly tipped with brown. 

 Tibial spurs deep brown or black. In fore legs metatarsus twice 

 length of tibia. Wings shorter than abdomen, hyaline : costal, 

 first three longitudinal veins and basal half of fourth longitudinal 

 vein brownish-ochreous. Costal and third longitudinal veins 

 meeting a little before apex of wing ; auxiliary vein indistinctly 

 reaching oosta opposite middle of posterior branch of fifth longi- 

 tudinal fork j second longitudinal joining costa a short distance 

 beyond tip of first longitudinal ; fourth longitudinal pale beyond 



