27 
Mr. G. C. Bradley), and states that he himself, has " found it in 
numbers in a garden at Rochester, where it caused much annoyance" ; 
he also {pp. cit., Vol. III. (1903), p. 251) says that it occurs on "the 
banks of the Thames on the Essex side." In September, 1899, 
this mosquito was very abundant and troublesome at Camberwell, 
London, S.E., where its bites were stated to cause inflammation, 
swelling, and abscesses ; and at the same period the species was also 
attracting attention in other London suburbs, such as Lewisham and 
Stamford Hill (N.). 
With reference to its abundance at Aldeburgh, Suffolk, in August, 
1895, Mr. Albert Piffard writes ('Entomologist's Monthly Magazine,' 
Series 2, Vol. VI. (1895), p. 227): — "One of the peculiarities 
of this pretty seaside town, which never fails to engage the attention 
of summer visitors, is the presence in vast numbers of a small 
species of gnat, which is always busy indoors and out of doors, 
in shade and even in bright sunshine, in inflicting a bite which 
has such a virulent effect on those unacclimatized, that but 
few hours elapse before each new arrival has the ' mark 
of the beast ' set on him. The species is known by the 
inhabitants as the ' Norway Mosquito,' and I ascertained on enquiry 
that it had been abundant for at any rate the last twenty-five years. 
A tradition generally accepted here assigns its introduction to a 
particular yacht which used to ply between this port and Norway." 
Theobald says (pp. cit., Vol. II. (1901), p. 18) with reference to this 
species : — " The bite is very severe and the insect most ravenous in 
warm weather, biting both by night and day." 
Outside the British Islands G. dorsalis is known to occur in 
Scandinavia, Denmark, Holland, Germany, and Austria. 
