232 
To see the W-shaped excavation of the prosternum clearly 
it is necessary to remove the head; from most directions it 1s 
difficult to see the line dividing the front face of the clypeus 
from the labrum. The clothing is remarkable, especially on 
the elytra, where the setae or scales on perfect specimens seem 
to be in geminate rows, with the white ones stouter than the 
black ones, and either lanceolate in shape, or elongate-elliptic ; 
on the upper-surface even where dense the derm may usually 
be seen from an oblique direction, but on the hind-parts and 
the under-surface the scales are so dense and flat that most of 
the derm is hidden. 
MAECHIDINUS MARGINALIS, n. sp., or var. 
Ten 
thorax wider, its clothing longer and more upright, the pale 
are longitudinally ribbed) and the hairs on the legs longer and 
denser. Length, 8-9 mm 
ab. — Western ustralia: King George Sound 
(Macleay Museum). Type, I. 10796. 
There are ten specimens of the present form before me, 
all from King George Sound; and six of latericollis, all from 
Beverley, so that the differences noted are unlikely to ee 
sexual; the curious, front tibiae and lateral notches 3 
prothorax are exactly alike on the two forms, but the Weg 
wider prothorax of the present form is unlikely to be of bees 
importance only. A specimen of this form was standing 1n the 
Blackburn collection at the end of Automolus, but it was 
d and the head was so mouldy that the antennae Tn 
concealed, hence he probably regarded them as broken 0#, 
and so refrained from describing it. 
CRYPTODUS. 
It is difficult and in many instances impossible, wea 
they are dissected out, to count the joints of the anuman n 
species of this genus, owing to the greatly dilated basal, ag 
concealing some of the following ones, and to the brevity s 
_ the joint preceding the club, the latter I have presumed in. 
every i to be three-jointed. Probably Pain 
_ dissected them out to make certain of them, as I have ha 
. do in many instances, thus making certain that his counts ^ 
the antennae of variolosus and piceus as being nine-joim 
