530 
NOTES ON CICADAS, 
appearance; the nervures of the hind wings horn-brown, with the 
apex of the lower row of cells towards the tip deeply shaded with 
black, fading out towards the middle of the wing. 
The whole of the insect is black on the upper surface, but 
covered with fine silvery white hairs which form little white spots 
here and there, looking as though it had been dusted with flour. 
From this circumstance it has received from the Sydney children 
the rather appropriate name of the " Floury Miller." 
None of this species were seen about Sydney, until the com- 
mencement of December. They are rarely found in gardens, 
preferring the Eucalypts; at Manly on the 7th of December they 
were very numerous upon the smooth stems of the apple tree 
gums (Angophora lanceolata); upon one small limb not more than 
a foot in diameter I counted 49, and all the trees in the gully 
were covered with them. 
When singing they sit close against the stem, elevating the tip 
of the abdomen and jerking it up and down while the song con- 
tinues; their note is sharp and shrill, but more musical than any 
of the other species. When sucking up the sap they flatten the 
body against the branch, burying the rostrum right up to the 
head, it being long enough to penetrate the stout bark and reach 
the inner side. They remained in considerable numbers until 
early in January, when they began to be scarce. 
Psaltoda flavescbns, Dist. ("The Mottled Grey"). 
Expanse of wings 4 J inches, width across the shoulders 7 lines, 
length of body 16 lines. Wings hyaline, nervures brown, but 
mottled with black, which extends over on either side, forming 
three irregular bands across the wings, the nervures of the hind 
wings brown. Ground colour of this Cicada black, thickly 
mottled with chocolate brown and ferruginous red, the former 
forming a slender parallel bar across the centre and a band along 
the apical margin of the prothorax, a W-like mark in the centre, 
a stripe on the sides of the mesothorax, and the edges of the 
metathorax and scutellum pale brown, the ferruginous tints 
