LN ROD Ueda row, 
——$¢————— 
SINCE the publication of the “‘ Monograph of Culicidae,” in 1901, 
a considerable amount of fresh material has been received from 
different parts of the world. Not only have the adults been sent, 
but in many instances the life-history has been worked out by 
observers living in the countries whence the insects have come. 
Much of this material] still remains to be described. 
No new terms have been employed in the present descriptions, 
the species are treated in exactly the same way as in the two 
preceding volumes. A suggestion, however, has been made to 
me by Capt. Liston that the tarsal joints should be called tarsal 
segments. This certainly is more accurate. 
The importance of the scale structure upon which the classi- 
fication of the Culicidae was mainly based has been generally 
recognised, and it may safely be said that it is the only character 
by which we can arrive at any satisfactory classification. These 
characters have been worked out more fully amongst the Anophe- 
lina, Culicina, and Aedeomyina. The large cumbersome genus 
Culex has thus been still further reduced, and the old genus Ano- 
pheles split up into several genera. There is quite as much 
structural difference between a true Anopheles, such as the generic 
type Anopheles maculipennis and the scaly Cellia Pharoensis, as 
between Culex and Anopheles; the same applies to the new genera 
of the Culicina and Aedeomyina. With the Anophelina the scale 
structure typical of each new genus differs on body, thorax, and 
to some extent the wings, but in the Culicina the chief differences 
in the new genera lie mainly in the form of the wing scales, and 
also, but to a less extent, in the Aedeomyina. M. Neveu-Lemaire 
has formulated a classification mainly based on the palpal joint- 
ing, but as the joints are not recognisable in ordinary specimens 
there is strong objection to this method of classification. Further 
mention is made of this subject (p. 6). 
