1500 FURTHER NOTES ON AUSTRALIAN COLEOPTERA, 
fere dimiclia parte latiori, antice quam postice paullo latiori, inse- 
quali, trans medium impresso, subtiliter nec crebre punctulato, 
disco in medio fere Isevigato, margine antico in medio vix evidenter 
(postico sat fortiter) emarginato, lateribus fere rectis ; scutello sat 
magno, fovea magna circulari impresso ; elytris crebre subtilius 
punctulatis, disco sulco longitudinali lato impresso. 
[Long. 4, lat. 2 lines. 
I I’efer this insect to Rupilia with some hesitation on account 
of the structure of its tibim and anteanse, the former being bi- 
canaliculate externally with the interval between the channels 
strongly costiform, and the latter being quite f the length of the 
body with the apical joints scarcely dilated and the shortest of 
them (8-10) very decidedly longer than wide. I do not know of 
any characterized genus presenting these features, but as the speci- 
mens before me agree very well with Rupilia in other respects, 
I do not think it nece.s.sary to give them a new generic name. 
Cydippa seems to want the external keel of the tibiae and to differ 
widely in the style of colour and markings, while the .specimens 
before me seem to resemble the described species of Rupilia in the 
latter respects. 
The colour of the elytra is peculiar being a rather dull blue 
with a kind of iridescence which in certain lights makes them 
appear reddish violet or coppery ; their sutural apex reaches to 
about the base of the antepenultimate segment of the hind body 
while (owing to the obliquity of the truncation of their apical 
margin) the external apex is on a level with the base of the 
penultimate segment (these measurements may not be quite exact 
as all the specimens before me are much distorted). Immediately 
behind the base of each elytron and a little within the humeral 
callus a wide longitudinal depre.ssion commences, and extends to 
near the apex, apjiearing as though the whole suVjstance of the 
elytron were indented ; the limits of this depression are not 
defined but it occupies the whole middle half of the organ. I am 
doubtful of the sex of the specimens before me. The transverse 
furrow across the middle of the prothorax is much more conspic- 
uous in some examples than in others. 
