SGå 
little brook. The still-born project gave the country electrical light 
for some months, and the water of the pond disappeared. The 
next year it was almost wholly dried up; not a single larva was 
to be found, the water being retracted far beyond that zone where 
they lived. On summer evenings I lay in the grass hoping that 
some mosquito, new for our fauna, would come and suck my blood. 
All was in vain. Neither in 1915 
nor in 1916 the water reached the 
zone, where the larvæ were found 
in 1914. As long as the imago was 
not found I did not like to publish 
my observations. 
There is only described two larvæ 
of the genus Mansonia; the one be- 
longs to M. perturbans (Walker) Dyar; 
home: North America; the other is 
M. titillans (Walker) Blanchard ; home: 
the tropical South America. Qur larva 
is not identical with the latter; the 
ventral brush of the 9th segment 
being, in M., titillans, preceded by a 
| row of small tufts reaching to the 
bh i middle of the segment; these small 
RS tufts are not to be found in our larva. 
Fig. 6. Larva creeping backwards. M. perturbans (H. D. K. 1915 Pp. 505 
nes: Plate 79) is known from North America 
from Canada to Florida and westward in the timbered country as 
far as British Columbia (H. D. K. 1915 p. 510). If perlurbans and 
our larva are not identical they are in any case closely related. 
After many excursions in 1915—16, always without result, I 
finally, in 1917, had the good fortune to catch the imago. On an 
early day in July I sat some 100 yards from that point where I 
for the first time got the larva. After a heavy rain the mosquitos 
stung vigorously. Culex nemorosus and C. cantans swarmed around 
me; then arrived three specimens of a dark-coloured mosquito, to 
which I immediately paid my attention. I could not get more than 
the three specimens; but when these were more thoroughly pk 
amined later on, it was established that I had found the Mansonia 
