252 DIPTERA OP AUSTRALIA, 



" Hoary. Antennae brown, testaceous at the base. Thorax 

 with three brown stripes, the lateral pair indistinct. Abdomen 

 brown, with a hoary band on the hind border of each segment ; 

 under side hoary. Legs greenish, long, slender, slightly pubes- 

 cent ; tarsi, except towards the base and tips of the femora and of 

 the tibiae, brownish ; fore tibia very much longer than the fore 

 metatarsus. Wings greyish ; veins brown ; discal mark darker 

 brown. Halteres testaceous. Length of the body, 4 J lines ; of 

 the wings, 7 lines. 



Sah. — " Van Diemen's Land." 



242. Chironomus duplex. Walker. 



Chironomus duplex, Walk., Insecta Saundersiana, Vol. I. 

 Diptera, 1856, p. 424 (Div. 1. Alae nudse. Sub-div. 1. Halteres 

 pallidi). 



"2. — Alhido-viridis ; antennce testacecB, fusco fasciatce ; thorax 

 vittis tribus obscure cinereo-fuscis ; abdomen fascum, albido 

 tomentosum, fasciis lateribusque albido-virldibus ; j^^des virides- 

 centes, tarsorum articuUs apice fuscis^ alee limpidoi, venis halteri- 

 husque testaceis, litura discali fusca. 



" Whitish-green. Antennae testaceous ; sutures and tips 

 brown. Thorax with three dark greyish-brown stripes. Abdo- 

 men above brown, with whitish tomentum ; sides and hind borders 

 of the segments whitish-green. Legs greenish, long, slender; 

 tips of the joints of the tarsi brown. Wings limpid; veins 

 testaceous ; discal mark brown. Halteres testaceous. Length 

 of the body, 4 J lines ; of the wings, 7 lines. 



Hah. — " Van Diemen's Land." 



243. Chironomus imitans, Walker. 



Chironomus imitans, Walk., Insecta Saundersiana, Vol L 

 Diptera, 1856, p. 425 (Div. 1. Alae nudas. Sub-div. 1. Halteres 

 pallidi). 



