236 
NEW SPECIES OF AUSTRALIAN COLEOPTERA, 
middle), hollowed internally, its extreme length equal to that of 
the three preceding joints. Prothorax broadly transverse, about 
as long as the head; apex truncate, base rounded; angles obliquely 
rounded; widest and somewhat angularly produced near the apex; 
lateral margins rather broadly reflexed, the others narrowly; 
median line feebly traceable at base. Scutellum triangular, 
almost concealed by the overlapping prothorax. Elytra parallel- 
sided almost to extreme apex, not two and a half times as long 
as head and prothorax combined; shoulders feebly rounded, each 
with traces of about three costae. Penultimate segment of abdo- 
men deeply and semicircularly excised. Legs slender, anterior 
tibiae very feebly bent, lobes of penultimate joint of anterior tarsi 
widely diverging. Length 4 J, width IJmm. 
Hab. — Barron Falls, North Queensland (Mr. Albert Koebele). 
The extraordinary antenna? of this species will at once dis- 
tinguish it from any of its congeners. 
LIeteromastix crassicornis, n.sp. 
^. Black; prothorax, muzzle and undersurface of head, under- 
surface of basal two- thirds of antennae, and the entire basal joint, 
anterior legs, except tarsi, intermediate trochantins, apical half 
of femora, basal half of tibiae, and posterior knees, testaceous; 
rest of the legs piceous-black or brown; eyes dark brown. Etytra, 
sterna, and abdomen moderately densely clothed with short 
greyish pubescence. Elytra densely, minutely, and obsoletely 
punctate, meso- and metasternum minutely but visibly punctate. 
Head — excluding mandibles — widely transverse, eyes rather 
large and prominent; antennae thick, increasing to apex, reaching 
posterior coxae, 1st joint slightly longer than 2nd-3rd combined, 
2nd about half the length of 3rd, 3rd slightly longer than 4th, 
4th-9th subequal, lOth-llth very large and thick, their combined 
length equal to 4th-9th combined, closely joined, 10th excavated 
beneath for the reception of the base of the 11th, 11th with 
depressions at its base above and on the sides, its upper edge as 
long as 10th, its lower twice as long. Prothorax about twice as 
wide as long, sides and base narrowly reflexed, sides feebly pro- 
