238 NEW SPECIES OF AUSTRALIAN COLEOPTERA, 
and prothorax combined, slightly wider than head and consider- 
ably wider than prothorax at base; shoulders feebly rounded, sides 
gradually widening to near the apex, apex almost truncate. Legs 
slender, tibiae straight, first joint of anterior tarsi large, and con- 
cealing the second. Length to apex of elytra 1J, of abdomen 2 \; 
width | mm. 
Q. Differs in having only the muzzle, four basal joints of 
antenna? and the knees reddish-testaceous, anterior tibiae piceous- 
red. Head scarcely transverse, densely and strongly punctate, 
with a number of shallow impressions; antennae shorter, prothorax 
less transverse, basal impressions very shallow, median line 
invisible, simple tarsi, &c. 
Hob.— Sydney. 
From the description of //. impressifrons (of which the male 
only is described) the male of the present species differs in the 
colour of the palpi, in having more joints of the antennae reddish, 
in the colour of the elytra, and in several structural details. I 
have a specimen in which the elytra have an indistinct greenish 
tinge. I have a pair obtained in copula, so can be certain 
of the sexes; there are several species in which both male and 
female strongly resemble the female of the above. 
Helcogaster gagatinus, n.sp. 
(J. Elongate, flat, shining. Black; basal third of antennae and 
anterior legs obscure testaceous. Above with sparse and rather 
long black hairs. Almost impunctate. 
Head about as long as wide; two longitudinal foveae commenc- 
ing on a level with the middle of the eyes, approximating and 
becoming shallower in front; foveae of undersurface moderately 
large, almost united; antennae rather thin, scarcely reaching inter- 
mediate femora. Prothorax about as long as wide, narrower than 
head; almost without impressions at base; base narrowly margined. 
Elytra longer than head and prothorax combined, slightly wider 
than head, sides subparallel, apex conjointly feebly rounded. 
Basal joint of anterior tarsi large, a curved comb on its inner 
edge. Length to apex of elytra 1|, of abdomen 2 J; width -| mm. 
