224 DIPTERA OF AUSTRALIA, 



Cricotopus, Van der Wulp, Tijdschr. Ent. XVII. p. 132, 1873 

 (Chironomina). 



Orthocladius, Y.d. Wulp, I.e. (Chironomina). 



Camptocladius, V.d. Wulp, I.e. p. 133 (Chironomina). 



Tanyfcarsus, V.d. Wulp, I.e. p. 134 (Chironomina). 



Eurycnemus, V.d. Wulp, I.e. p. 135 (Chironomina). 



Metriocnemus, V.d. Wulp, I.e. p. 136 (Chironomina). 



Halirytus, Eaton, Ent. Mon. Mag. XII. p. 60, 1875 (Ceratopo> 

 gonina 1). 



Limnophyes, Eaton, I.e. (Chironomina). 



Didymophleps, Weyenberg, Stett. Ent. Zeit. XLIV. Nos. 1-3, 

 p. lOS, 1883 (Ceratopogonina). 



Burmeisteria, Weyen., Tijdsehr. Ent. XXIX. p. 130, 1886 

 (unknown to me). 



Psamathiomya, Deby, Jour. K Mie. Soc. II. p. 181, 1889 

 (Ceratopogonina T). 



Doloplastus, gen.DOv. proposed in the present contribution, 

 p. 260 (Chironomina). 



Isoplastus, I.e. p. 279 (Tanypina). 



Procladius, I.e. p 283 (Tanypina). 



Leptoeonops, I.e. p. 288 (Ceratopogonina). 



Venation. 



The venation of the wings is eonsiderably modified in the 

 the Chironomidse. We have elearly three principal types of vena- 

 tion, which at once suggest the division of the genera into sections. 

 The homologies of these types at first seem doubtful and obscure, 

 and, as might be expected, the opinions of authors diflfer con- 

 siderably about the terminology of the veins. What one author 

 considers part of one vein, another regards as the whole, or a 

 portion, of another ; one vein is sometimes named twice, and two 

 veins united under a single name. Occasionally the rudimentary 

 condition or complete absence of a certain vein will lead to a 



