The chief and first complete description was given by GOELDI in 
« Os Mosquitos No Pará » (pp. 95-100). 
The adults are especially attracted to dark surfaces for a resting 
place, and it has been noticed that they are especially attracted to 
dark clothing. Low wrote me from the West Indies in 1902 that 
« black and blue clothes are where they especially choose to rest, 
and it is really astonishing, if one has none of those hanging about, 
the reduction in their numbers ». 
How far this species can fly we cannot at present say, but it has 
been stated that if a ship does not anchor within 200 fathoms, it is 
safe from becoming invaded by these Mosquitoes. 
Vitality of the ova. 
Two cases show very clearly the length of time the ova may 
remain dormant, an important point in considering the artificial 
distribution of this Mosquito. 
Dr. FINLAY, the founder of the Yellow Fever Mosquito theory, 
sent me ova from Cuba, dry, in a test-tube. From neglect these 
eggs after their journey were left for two months. As an experiment 
they were placed in tepid water, and in less than 24 hours there 
were larva swimming in the jars. How soon the ova hatched I do 
not know as they were put in at night, and being away early next 
day observations were not made. 
They developed very slowly, and many died. None pupated 
until three weeks after, one female hatched and five males (1). One 
of the males being the distinct Mosquito variety. 
NEWSTEAD (1910) checked my observations regarding the long 
vitality of the ova, when dried, with the following results : 
Two lots of eggs were dried in air, one subsequently placed in a 
desicator with chloride of calcium for 24 hours, and sent to England 
in tightly corked glass tubes. 
The following dates give the result of this experiment : 
September roth-11th. Eggs laid at Manáos, Amazon. 
October 26th. Reached England. Placed in water at 23° C. 

(1) THEOBALD, « Monograph of Culicidæ », vol. 3, p. 143, 1903. 
