190 SPOLIA ZEYLANICA. 
Each joint of the flagellum of the antenna (of the male) bears a 
circle of very long stiff hairs at its base, and is clothed for the 
greater part of its length with shorter and softer hairs. The first 
joint of the flagellum bears also several additional circles of long 
stiff hairs. The first joint. of the antenna is very small and in- 
conspicuous, the second nearly half as large as the head. The third 
(z.e., the first of the flagellum) is of moderate length and practically 
cylindrical. Joints 3 to 10 are subequal, joints 11 to 13 also sub- 
equal, but distinctly shorter than 3 to 10. 
The fourth joint of the palpi (of the male) is the longest, the 
second the shortest, the first and third being subequal. The basal 
joint is clavate, the others cylindrical ; all are clothed somewhat 
sparsely with slender hairs. 
The legs are not very long ; they are densely clothed with long 
straight hairs, among which shorter hairs are dispersed. The hind 
tibie are slightly incrassated at the tip. The femur and tibia of 
each leg are subequal, and in the first two pairs either joint is 
distinctly longer than the first tarsal joint, which in its turn is 
longer than the next three joints together. In the hind leg, however, 
which is longer than either of the other two, the tibia is only 
slightly longer than the first tarsal joint, which is shorter than 
the next three joints together. The claws are slender and strongly 
curved. 
There is a small bunch of stiff slender hairs on the vertex just 
behind the eyes and another just in front of them. The thorax is 
sparsely clad with longer and stouter hairs, most of which curve 
backwards. The scutellum bears a very prominent bunch. The 
hairs on the abdomen, which are also scattered somewhat sparsely, 
are finer, more slender, and apparently softer. 
The basal joint of the male claspers is cylindrical, about three 
times as long as broad and of about the same length as the distal 
joint, which is slender, not very strongly curved, narrowly blunt, 
and a little irregular at the tip. This joint is naked, but the basal 
joint is clothed in long hairs. 
Length 2 mm. ; length of wing 1°3 mm. 
II.—DEscrRIPTION OF THE LARVA AND PUPA. 
The larva differs considerably from any that has previously been 
described, but bears a certain purely superficial resemblance to that 
of Stegomyia. Its most conspicuous features are its broad triangular 
head, minute eyes, long jaw-like antenne, which arise close together 
in front of the head, and the distinct segmentation of the thorax. 
There are no palmate chetz on any part of the animal. When 
fully adult it measures about 2-5 mm. in total length, its head 
measuring 0°53 mm. by 0:72 mm. 
The head is flattened as well as broad, triangular in outline, 
pointed in front, but with the posterior lateral angles broadly 
