125 
Genus Anopheles . 
« 
it is creamy scaled ; the costa of the 9 from Rio is also darker 
than the St. Lucia ones, one showing only two clear white 
spots, and there are also white scales at the base of the 
wing in this specimen. The pale costal spots vary from four 
to six. 
In the £’s from St. Lucia there are also dark scales on the 
fourth long vein. One very distinct variety exists, which is 
described below as sub-species albipes. 
Dr. Lutz calls it the “ Spotted-winged Swamp-mosquito.” 
The bites of this species are not particularly irritating, nor is 
it very bloodthirsty. It enters houses, as well as being common 
in swampy localities. Arribalzaga, however, states that it is not 
often found in houses. Dr. Grabliam bred it from roadside 
puddles in Jamaica. 
Concerning A. albitarsis, Arribalzaga writes as follows :— 
“It is found in El Paradero and Las Conchas, near Buenos 
Ayres. It is also found along the Paraguay River, but in smaller 
numbers. I have received some specimens collected by Dr. 
Holmberg in Formosa. The colour of this species varies 
according to the state of maturity in which the Anopheles is. 
“ The specimens just come from the pupal stage have all the 
parts that I point out as grey or dark brown, of a testaceous 
tint, and the palpi rings only just visible. The wings are apt to 
have the whole costal region densely covered with little scales, 
dark brown in colour, scarcely perceptible. The back part of 
the thorax is in many specimens of an uniform grey, but 
in the greater number you can always see three longitudinal 
lines. 
“ The bites of this species of Anopheles are slightly disagree¬ 
able, and it appears that it is not very sanguinary. I have never 
seen it in houses or elevated places. This induces me to think 
that this insect never goes far away from the marsh or swamp 
in which it has passed the larval and pupal stages.” 
1a. A. albipes, mihi. sub-sp. 
(Fig. 3, PI. I.) 
This form resembles the type in all respects except that 
the last tarsal joint in the hind legs has a very distinct and 
persistent deep black basal band. The thorax is rather browner 
in some specimens, and there are only two white bands to the 
9 palpi. The fore legs have dark scaled femora, pale beneath, 
