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smeared on the clothing only. Pseudoskusea basilis, Tayl., up to the 

 wet season of 1916 has been somewhat rare, but was then even more 

 numerous than 0. vigilax and C. sitiens. This mosquito breeds in 

 crab-holes containing salt water and putrifying mangrove leaves, 

 but not in larger pools or hollow stumps. It is not known to enter 

 dwellings. 



Less numerous night-and-day-biting species include Ochlerotalns 

 {Scuiomyia) notoscripus, Skuse, var., Reedomyia pampangensis, Ludl., 

 and Mansonioides {Taeniorhynchus) uniformis, Theo. 



Culexfatigans, Wied., is the only species recorded which bites only at 

 night. Its presence denotes the existence of filthy water in the near 

 vicinity. It may be found sheltering in dwellings and out-houses 

 during the day. Citronella oil is efficient as a repellent smear. 



The day-biting species are represented by : Stegomyia Jiilli, Taylor, 

 which is rarely met with, and S. fasciata, F., which is well established 

 at Darwin and the neighbourhood, but is not known on Bathurst 

 or Melville Islands, nor on the Alligator, MacArthur, Roper, Daly and 

 Victoria Rivers in the inhabited regions. Its spread appears to be 

 along the railway line, and individuals have been frequently observed 

 in the lavatories attached to passenger cars. It breeds in any receptacle 

 sheltered from direct sunlight containing water, and prefers dark 

 objects to rest upon. It is considered to have been responsible for 

 the spread of the epidemic of dengue fever in Darwin during 1914. 

 S. smtellaris, Walk., does not thrive in Darwin and neighbourhood, 

 the only locality in Australia from which it is recorded. Aedimorphus 

 australis, var. danvini, Taylor, and Macleaya tremuh, Theo., are both 

 rare species, of which the latter has been observed biting goats. 

 Taeniorhynchus brevicellulus (Chrysoconops acer, Walk.), is a somewhat 

 uncommon species which is sometimes found in dwellings at night. 

 Its bite is painful, causing a whitish swelling on delicate skins. It is 

 believed to breed in wells. 



Culex tigripes, Grp., is a beneficial rather than a noxious species. 

 It is confined to the town area of Darwin and breeds in water-butts, 

 disused horse-troughs and sometimes in stagnant pools and open 

 irrigation wells. It does not molest man, but its larvae are voracious 

 devourers of their own and other mosquito larvae. 



At the Channel Island Quarantine Station, Port Darwin, a search 

 for Stegomijia fasciata on two occasions was productive of no result. 

 On the first occasion no mosquitos were observed and on the second a 

 single specimen of 0. vigilax, but no Anopheline mosquitos were found. 

 The present condition of Channel Island as a quarantine station for 

 prospective yellow fever cases is therefore very satisfactory. Owing 

 to local conditions of moisture, it is considered highly improbable 

 that any concentration of Anopheles annulipes will occur on the island. 



Waterston (J.). Notes on the Morphology of Chalcidoidea bred from 



Calliphora. — Parasitology, Cambridge, ix, no. 2, 26th February 

 1917. pp. 190—198, 2 figs. 

 In this paper, Melittobia acasta, Wlk., is described, and its synonomy, 

 about which there has been some controversy, is discussed. It is a 

 markedly polyphagous species and never apparently a true hyper- 

 parasite. It appears to attack everything within its limited range of 

 action and has already been bred from a long list of hosts. 



