220 DIPTERA OF AUSTRALIA, 



innovations. Van derWulp in 1873 split up the genus Chirono- 

 mus into six genera, the leading characters of which are shown in 

 the covering and venation of the wings, and joints of the legs ; 

 all these divisions are very useful and appear quite tenable. 

 Besides the above-mentioned there are several other genera by 

 various authors, some of which are unknown to me ; their names, 

 however, appear in my list of genera. 



Westwood in his generic synopsis (Class. Ins. II. 1840), arranges 

 the genera after much the same manner as Macquart, but adds 

 more particulars about the joints of the antennae, and introduces 

 the sub-divisions of Ceratopogon proposed by Megerle, Latreille, 

 and Stephens as genera. 



Family 2. Tipulid^, Leach. (Tipulides, Macq. H.N. Dipt.) 

 Sub-family 1 Chironomides, Westw. (Culiciformes, Latr., Macq.) 



Corethra, Meig. Chironomus, p. Fab., 3 sp. Ch. lolumicornis. 

 Fab. 



Antennse $ plumose to the tip ; legs placed at equal 

 distances apart ; sternum not prominent. Steph. pi. 42, 

 fig. 1. 

 Chironomus, Meig. Tipula, p. Linn., 91 sp. G. plumosus, L. 

 Curtis, 90. 



Four hind-legs at a distance from the others ; sternum 

 prominent; last joint of (J antennae longest (fig. 124 8). 

 Tanypus, Meig. Chironomus, p. Fab., 26 sp. T. monilis, L. 

 Curtis, 501. 



Antennae 14-jointed in both sexes, penultimate joint 

 longest ; sternum prominent ; four hind-legs wide apart. 



Sphaeromias, Steph. , 6 sp. Sph. alhomarginatus, 



Curtis, 285. 



Antennge slender, basal joint globular, eight following 

 joints short, five terminal joints long; eyes emar- 

 ginate ; trophi fully developed. 



