226 A Monograph of Culicidae. 
in captivity, they seem to agree perfectly, and do not molest 
each other. 
“ The imago.—It is nocturnal in its habits and does not feed 
by day. Once wishing to have a man with Filaria demarquaii 
embryos in his blood bitten during the day, I made the cage 
perfectly dark with a black cloth, but even then they would not 


ees hj Cf /y WY 
ZY f 
Fig. 118. 
Caudal end of larva of Culex fatigans, sub. sp. Skusti, Giles. 
bite. On the introduction of the hand of a patient into the 
house at night they bit freely. They frequent cupboards, presses, 
and other dark situations during the day and prefer dark clothes 
like the Stegomyia. 
“Tt is the chief spreader of filarial disease in the West Indies, 
acting as the intermediate host for F. nocturna.* I agree with 
you that Dr. Manson’s original work in China was probably done 
on this species, and also Bancroft’s later work in Australia. It 
is inefficient for F. demarquaii.” 
Regarding this species, Dr. Bancroft writes as follows :— 
‘“ House mosquito of Australia (which Skuse described but did 
not name).—Lately I have found that this mosquito is the 
Australian intermediary host for Filaria immitis.” Grassi has 
spoken of this mosquito thus: ‘ C. ciliaris of Australia, which is 
synonymous with C. pipiens, etc.’ Now I should like to say 
to you this, the House Mosquito of Australia is not a native 
mosquito, but was introduced. It is strictly nocturnal in habit ; 
* Brits Med. diour.,.1.6.01 1: 13386; 
