Diptera from Port Darwin, Australia. 223 



Family Culicidae. 



Subfamily Culicinje. 



Section CULICINI. 



1. Toiniorhynchus hrevicellulus , Theob. 



This species exhibits a considerable range of variety in 

 colour. 



2. Mansonioides um'formis (Theob.). 

 3» Stegomyia fasciata, Fabr. 



4. Ochlerotaius vigilax (Skuse). 



These four species appear to be common. 



5. Mucidus alter nans, Westwood. 



Section Anophelini. 



6. Anopheles {MyzorTiynchxis) hancroftii^ Giles* 



Appears to be common. 



I leave the name, as these specimens are not in the best 

 condition, but for my own part I am convinced there is no 

 difference between this species and A, barhirostris, V. de 

 Wulp. The spots in the fringe are not merely variable in 

 this and other species of the subgenus^ but also they depend 

 to some extent on the angle from which the light is 

 reflected. 



7. Anopheles (Nyssorhynchus) annulipes, Walker. 



This specimen has been compared with tiiose in the 

 British Museum (Nat. Hist.) and differs only in having 

 scales on all the abdominal terga. Scales are extremely 

 scanty on the first tergum, slightly more numerous on the 

 second, still more numerous on the third, and fairly abundant 

 on all the rest. If the artificial classification of Theobald 

 were adopted this specimen would be included in the 

 " genus " Neocellia. There seems good reason to suppose 

 that in the subgenus Nyssorhynchus, using the term in a wide 

 sense, to include all the forms catalogued by Tiieobald under 

 Nyssorhynchics, Neocellia, and Cellia, the amount of tiie 

 scaling on the abdomen is often a fluctuating and inconstant 

 character. 



