145 
became almost untenable. In the centre of the town, fortunately, the 
nuisance was not so great, due chiefly to the absence of breeding- 
places. 
In Manaos, it is found in the suburbs of the city at the pumping- 
station, and in the neighbourhood of some of the Igarapes. It was 
especially troublesome during ‘high river’ in the year 1908, when 
many of the cellars of the houses and offices situated along the low- 
lying land by the river front were filled with water. This Mansonia 
bred in the collections of water thus formed in large numbers, but the 
larvae were not found where the water had been oiled. The nuisance 
caused by these mosquitos was very great, and it was almost 
impossible to have even the early meals—breakfast and lunch 
in peace. 
Mansonia pseudotitilIans, Theobald 
One example, a female, agrees for the most part with the 
description given by Theobald,* and is apparently referable to this 
species. It differs, however, in having a few short clavate lateral 
scales on the wings; but these are much shorter than in M. titillans , 
and very few of them are present. Unfortunately the anterior tarsi 
are wanting, so that the record must, for the present, remain a some¬ 
what doubtful one. 
Habitat-. —Iquitos, January 13th, 1906. The capture was made 
in the afternoon on board the SS. ‘ Napo ’ while lying alongside the 
Muelle. This mosquito has not hitherto been recorded from Peru. 
Mansonia longipalpis, n. sp. (Newstead and Thomas) 
(Plate XI, figs. 5, 5 d) 
Female. Palpi long (fig. 5). Thorax clothed with golden 
ochreous scales; posterior region black. Abdomen blackish with 
lateral patches of creamy-white scales. Legs distinctly speckled, 
hind tibiae white with a black band. Wings with a double dense 
black bar at base. 
Length.4-4-5 mm. I ength of detached wing 5 mm. 
'Mono. Culicnl., Vol. II. p. 171. 
