62 
Psyche 
[June 
After the usual dehydration the sedeagus and copulatory 
hooks are mounted in balsam on a slip of celluloid pierced by the 
pin of the insect to which they belong. We may follow Mr. F. W. 
Edwards’ method with mosquito hypandr a and leave them 
entirely bare of cover-slip, or we may use a cover either of glass 
or of celluloid. If it becomes necessary to use the genitalic 
material thus mounted, in a projectoscope or in a photo-micro- 
graphic apparatus, one has prepared a stock of cards of the size 
and shape of a microscope slide, and with a strip of stout paper 
of exactly similar dimensions pasted on them by both ends. A 
circular hole of appropriate size is punched through both paper 
and card and the celluloid mount is then slipped in between 
paper and card so as to extend across the hole. The resulting 
combination can be handled in all respects like an ordinary glass 
microscopic slide. 
A complete synonymy of these and other species will be 
given in my forthcoming list of the Cicadidse of the world. It 
has been elucidated for the New Zealand species in a paper now 
in the press {Trans. New Zealand Institute, 1926). Only sufficient 
references are quoted here to establish the nomenclature adopted. 
An examination of all the types of New Zealand cicadas ac- 
complished last summer in Europe, has led to several disturbing 
but necessary changes in the names of the commoner species. 
Melampsalta sericea (Walk.) 
Cicada sericea Walk., 1850, List Homopt. Brit. Mus., p. 169. 
C. nervosa Walk., op. cit., p. 213. 
Melampsalta indistincta Myers, 1921, Trans. N. Z. Inst., vol. 53, 
p. 245, pi. 46, figs. 7, 8. 
The above synonymy is based on a study of the types in the 
British Museum. The insect now labelled as type of sericea is a 
female, while that of nervosa is a male. Sericea is the Maorian 
representative of a homogeneous group of species found also in 
New Caledonia and in Australia, and reaching its highest de- 
velopment in the arid and semi-arid regions of the latter con- 
tinent. The New Caledonian species, M. melanesiana is des- 
cribed below. The Australian representatives include the fol- 
