BY ARTHUR M. LEA. 
243 
Basal segments of abdomen broad. Legs slender, tibia? straight, 
first tarsal joint large (externally minutely serrate), concealing 
the second joint. Length to apex of elytra 2, of abdomen 3 J; 
width imm. 
9. Differs in being broader, prothorax transverse, the head \ 
with less red, and less rugosely sculptured, posterior femora 
piceous, intermediate reddish on apical half only, anterior tibia? 
reddish-brown and with simple tarsi. 
Iiab.— Galston. 
Helcogaster major, n.sp. 
0 \ Rather robust, shining, slightly convex, parallel-sided. 
Reddish-testaceous, apical joints of antennae slightly infuscate; 
four posterior coxa? and base of posterior femora infuscate; meso-, 
metasternum and abdomen black; elytra black, with a faint 
coppery-blue tinge. Above with sparse and rather long black 
hairs, undersurface with short sparse pubescence. Elytra densely, 
minutely, and very shallowly punctate. 
Head — excluding mandibles — transverse; anterior half deeply 
excavated, the sides of the excavation near the eyes marked by a 
raised tubercle, and in front and close to the antenna? very slightly 
raised, the head when viewed from behind appearing to possess 
four short horns; feebly corrugated at base, sides and under- 
surface; fovea? of undersurface approximate, rather large, open 
behind; antenna? almost reaching apex of elytra, 2nd joint slightly 
longer than 3rd, 5 th- 9th strongly serrate internally. Prothorax 
strongly rounded, transverse, about the width of head, a feeble 
depression at base and a still feebler interrupted one at apex, 
Elytra not much longer than head and prothorax combined, at 
base scarcely wider than head, very feebly increasing to apex, 
each separately rounded. Basal joint of anterior tarsi large, a 
black curved comb inwardly, a few short black seta? to posterior 
tibia?. Length to apex of elytra 3 J, of abdomen 5 J; width 1 J mm. 
9. Differs in being less robust, with simple antenna?, and tarsi 
more obscurely coloured; the head longer, much more shallowly 
depressed, with two shallow fovea?, and without elevations. 
Hah. — North West Australia (Macleay Museum). 
Q 
