136 
Male. Head moderate, not large; eyes not prominent. An- 
tenne short. Prothorax lightly convex, transverse (1:9 x 2:7 
mm.), widest about middle, strongly rounded on sides ; base very 
little wider than apex ; anterior margin lightly emarginate ; base 
lightly rounded, truncate in middle ; anterior angles wide, obtuse, 
not advanced ; posterior angles obtusely rounded, not marked ; 
border wide on sides, narrow and entire on base; lateral margin 
explanate ; median line obsolete ; lateral basal impressions wide 
and shallow. Elytra lightly convex, wide, oval (5 x 3°6 mm.), 
lightly rounded on sides; sinuosity of apical curve obsolete, 
though just perceptible at extremity of ninth interstice; striz 
lightly impressed, first flexuous near base ; interstices flat, 
second with a short, lightly impressed striole at base, third with 
a fine puncture on apical declivity, about level with extremity of 
fifth interstice, ninth punctate, the punctures not widely inter- 
rupted in middle. Mestasternum smooth, very finely punctulate on 
each side. Ventral segments with a few punctures, bearing long 
sete scattered over their surface. Posterior femora compressed, 
dilatate in middle, but without any obvious projection on lower 
side, a row (more or less double) of not closely-placed punctures, 
bearing long setz along outer margin of lower side; posterior tibiz 
almost straight ; four anterior tarsi with joints 2—4 dilatate (not 
very broadly) and densely spongiose below ; posterior tarsi short, 
first joint hardly longer than second. 
Length, 8; breadth, 3:6 mm. 
This species leads off from the typical species of Hypharpax 
towards Phorticosomus; probably its nearest ally among de- 
scribed species is H. Deyrollei, Casteln., from which it may be 
distinguished by its wider and less convex shape, the prothorax 
more rounded on the sides, the different form of the elytral 
interstices (in H. Deyrollei the interstices become narrow and 
convex at their apex, and the fifth and sixth extend much nearer 
to the apex than in H. interioris), and by the position of the 
puncture of the third interstice, which is much nearer the apex in 
H. interioris than in H. Deyroller. Nore.—The prothorax, 
though not quite evenly rounded laterally, being a little more 
obliquely narrowed towards the base than towards the apex, is 
so much more strongly and evenly rounded on the sides than that 
of any other Hypharpax I have seen, as to make this a most 
obvious and noticeable feature of the species. 
Besides the species dealt with above, the following Carabidz 
were brought by Mr. Zietz from Lake Callabonna :— 
Calosoma Schayeri, Erich. 
Geoscaptus levissimus, Chaud. 
Euryscaphus obesus, Macl. 
