Ncio Fossorial Hymmo'pUra from Australia. 421 
b^. Clypeus without tubercles. 
a-\ Clypeus porrect, widely and 
deeply emarginate ; abdomen 
smooth and shining .... 0. euchroma, Turn, 
bb Clypeus less strongly porrect, 
very shallowly emarginate or 
transverse at apex ; abdomen 
closely punctured, 
ah Clypeus shallowly emargin¬ 
ate ; triangular space at 
base of median segment 
with two yellow spots ; 
third abdominal segment 
only black entirely . . . G. multiguttata, Turn 
bh Clypeus transverse ; triangular 
space unspotted ; third and 
fourth abdominal sf-gnients 
black . 0. inexpectata, Turn. 
b. Triangular space at base of median 
segment not smooth, 
a^. Triangular space almost wholly 
striated. 
a^ Triangular space finely trans¬ 
versely striated. C. Jluvialis, Sm. 
b^. Triangular space longitudinally 
or obliquely striated, 
a^. The striae close and almost 
longitudinal. Black, second 
and fifth abdominal seg¬ 
ments orange. G. varipes, Sm. 
b'*. The striae oblique, not reach¬ 
ing the apex. Black, 
marked with dull yellow 
and ferruginous . ... G. labeculata, Tura 
b^. The triangular space striated in the 
corners only or entirely punctured, 
a^ Clypeus porrect and broadly 
emarginate. G. vennsta, Sm. 
b^. Clypeus not porrect. 
First abdominal segment 
shorter than the breadth 
at the base. 
a^ Black, two basal and fifth 
abdominal segments, legs 
