184 Arthur M. Lea: 
Head with three deep and wide grooves. Rostrum separated from head by 
a strong transverse depression; with a deep median channel; and on each side with 
another channel continuing the lateral groove of head, deep and rather wide at 
base, but narrow and running out in front. Prothorax not much wider than long, 
sides strongly rounded; with a deep and wide median channel, on each side of which 
is an irregular elevation, considerably thiekened about its middle; surface elsewhere 
somewhat vermieulate, and with large irregular granules or small tubereles, frequently 
conjoined. Elytra with irregular rows of large punctures, becoming very large at 
sides; suture subearinated at base; second interstice with a large obtusely conical 
tuberele just below summit of posterior deelivity; third subcarinated near base, and 
projeeting slightly on to elytra, with two or three (sometimes only one) distinet 
tubereles, of which the hind one is generally as large (although more obtuse) as the 
one on seeond; fifth with about three more or less median tubereles; seventh with 
about five or six; shoulders strongly projeeting on the prothorax. Length (exeluding 
rostrum) 11—15'/, mm. 
o Differs in being wider, shoulders rounded and not projecting on the pro- 
thorax, apex with two small acute mucros, and under surface without a hairy ridge. 
Hab. -— Vietoria: Melbourne (Berlin Museum and Entomological Society), 
Thorndale (National Museum), Portland (E. W. Ferguson); N. S. Wales (Macleay 
Museum); Tasmania: Brown’s River (C. R. Findlay), Sandford (W. L. May). 
The rounded shoulders of the female are quite suffieient to prevent this species 
from being confused with the females of swleicollis, as in that species the shoulders 
are practically the same in both sexes. The specimen from the Entomological 
Society is marked Acanthomus basalis, Boi; but the species I identify as such (Mythites 
basalis, Boi) has the first and third interstices conjoined at the base, and (as also 
the shoulders) strongly produced in both sexes. Perfossus is described as having all 
the joints: of the funiele transverse; degener as having only a single depressed carina 
in front. As it is the only speeies known to oceur in Tasmania, it probably is the 
species on which Schoenherr founded the genus, and which be named tuberculatus 
(without giving a deseription, however). 
Each front tibia of the male is somewhat inflated at the apex, with the under 
surface concave and densely and finely setose; but the inflated portion is much less 
conspicuous than in frater. 
89. M. suleicollis, Germ. 
90. Bubaris pithecius, Pasc. 
91. Euomus basalis, Boi. 
92. E. Stephensi, Gyll. 
93. Amorphorrhinus australis, Germ. 
94. A. polyacanthus, Pase. 
95. Dialeptopus monachus, Pase. 
96. D. plantaris, Pasc. 
97. Tetralophus elevatus, Pase. 
98. Aedriodes fastigiatus, Pase. 
99. Ae. mendosus, Pasc. 
