554 
hairs. Legs with long and somewhat outstanding scales at the apex 
of the femora; the fourth and fifth segments of the front and 
middle tarsi very short and broad, being compressed laterally. 
Scale structure of both sexes. 1 hose of the head and thorax as 
in Mansonia , with the exception of a few broad curved ones just in 
front of the scutellum and at the base of the wings; pleurae densely 
clothed with large, broad, spindle-shaped scales; prothoracic lobes 
distally clothed with spindle-shaped ones; scutellum with long 
falciform scales. Wings with Mansonia -like scales, the outstanding 
ones being, however, much longer. 
Type, Thomasina Ion gi palpis (Newstead and 1 homas). 
I'ig. 2. Palpus of $ Tbomasind lottgipalpis. (Newstead and Thomas. 
In describing the female of this species, Newstead and Thomas 
icferred it to the genus Mansonia owing to a general resemblance 
which the scale structure bears to this genus; and, although these 
authors had noted the peculiar character of the palpi, they did not 
think this was of sufficient importance to warrant the erection of a 
newjg enus f or the reception of this insect. 
* Ann. of Trop. Med. and Parasit., Vol. IV. No. i, p. ,45 7 
