168 A Monograph of Culicidae. 
the cell; posterior cross-vein rather more than three times its 
own length distant from the mid-cross vein. Halteres pale, with 
fuscous knob. 
Length.—4 to 4°5 mm. | 
6. Palpi deep brown, with a narrow pale band at the apex, 
and another at the base of the penultimate joint and a broad 
pale one on the long antepenultimate joint, the last two and 
the apex of the antepenultimate joints with long black hairs ; 
a very distinct notch on the antepenultimate joint ; 
apex paler; last two joints of equal size. Pro- 
boscis with a rather narrower pale band than in 
the 9. Fore and mid ungues unequal and uni- 
serrated, hind small, equal and simple; venation 
much as in the ?, but the stem of the first sub- 
marginal cell much longer than the cell. 
Length.—4 mm. 
Time of capture.-—December. 
Habitat.—Christmas Island (Dr. Durham). 
Observations.— Described from a series bred by 
Dr. Durham from larvae found in salt pools on 
Christmas Island. It comes in the same group as 
Culex Vishnui, C. microannulatus, etc., but can easily 
be told from any of them by the much longer stalks 
to the fork-cells, the narrower and more densely- 
scaled veins, and the great distance of the posterior 
Fig. 90. cross-vein from the mid, which seems constant in 
ane ste sp. this species. The venation of the 9 is thus more 
like a g, in fact, there is but very slight difference 
hetween the ¢ and ¢ wings in this species. The abdomen is 
to some extent variable in appearance in the dead specimens, 
probably due to shrinkage. The basal lateral spots and the 
apical one on the antepenultimate segment are often indistinct 
in shrunken specimens. j 
The thorax is distinctly ornamented, a character which I 
have not seen before in this banded proboscis group. 

CULEX THALASSIUS. 2. sp. 
Proboscis with .a narrow median white band. Thorax dark 
brown, with narrow curved déep golden-brown scales. Abdomen 
dark brownish-black, with narrow basal grey bands, often absent ; 
penultimate segment with lateral white spots only ; pleurae very 
