142 A Monograph of Culicidae. 
New notes, etc.—The following long note of considerable 
interest has been sent by Dr. Low :—‘“It is essentially a 
domestic mosquito, breeding in water barrels, tanks, wells, tubs, 
fountains, and other such collections round houses. It is very 
commonly found together with the larvae of Culex fatigans in 
the same water. I have never found it in other situations such 
as in the country, collections of water favoured by Anopheles 
and other mosquitoes, what may be termed wild mosquitoes, in 
contradistinction to the domestic. It is very common (in the 
West Indies), though in some islands C. fatigans greatly pre- 
dominates (e.g. Barbados). 
“The larvae can at a glance be distinguished from Culex 
larvae . . . they really have no resemblance to a typical Culex 
. . their behaviour in water is quite different. If one looks 
into a barrel in which the two larvae are, one will at once notice 
most of the Culex at the surface breathing, every now and 
again descending to feed for short periods. The Stegomyia 
larvae, however, will be noticed wriggling about at the bottom, 
their movement in some ways resembling that of the blood 
worms. They remain here for considerable periods of time, 
and then slowly come up to the surface, take in fresh air, 
and go down again. To illustrate this, if one wants to catch 
them, one has to put one’s ladle down to the bottom and 
scoop them up from there, whereas in the case of the Culex 
you can easily dip them up from the surface. Their colour 
is greyish-white, instead of brown, as is the case of Culex 
fatigans. 
“The imago is a very irritating and annoying insect, 
attacking one with great pertinacity. As Gray says, it is 
especially troublesome between the hours of 1 P.M. and 3 P.M. 
Whilst in Trinidad, unless I went into bed under a mosquito net, 
I found it impossible to have a rest and sleep in the heat of 
the day owing to the continual bites of this pest. It used to 
bite one on the feet and ankles in the mornings when shaving, 
and again, as Gray says, bites all night as well. It is a very 
pretty little mosquito and very hardy, living in captivity on 
sugar and bananas for a long time. I have kept them as long as 
forty days, and they were quite active then. If one introduces 
one’s hand into the cage they quickly settle on the hand and 
probe with their proboscis, but they never puncture, and I have 
never seen blood in the stomachs of hundreds I have examined. 
Black and blue clothes are where they especially choose to rest. 
