1961] 
Darlington — A ustralian Carabid Beetles 
1 17 
Prosternal process not setose; purplish; length 34-39 mm. 
(Blackall Range, SE. Q.) porphyriacus SI. 
12. Posterior-lateral prothoracic setae near base .... at least 3 species: 
wilsoni Cast., nitidicollis Cast., and speciosus SI. 
Posterior-lateral prothoracic setae about % of prothoracic length 
before base 13 
13. Smaller, length c. 21-27 mm.; black sometimes slightly bluish or 
purplish (widely distributed in NE. N. S. W. and S. Q., from 
Dorrigo to Blackall Range marginiferus Chd. 
Larger, length c. 28-34 mm. ; wholly purple or blue ( Mt. Royal 
Range, Dorrigo, etc.; possibly 2 species) cyaneus Cast. 
The following key to tropical Australian Trichosternus differs from 
the preceding key in form (ranges and authorities omitted) because 
the tropical species are discussed individually. All the species have 
rather long, strong, curved mandibles; rather short, irregular, sub- 
parallel frontal foveae; well developed, emarginate mentum tooth; 
palpi not strikingly modified; elytra margined at base; 8th (submar- 
ginal) stria lined with very small ocellate punctures; lower surface im- 
punctate or nearly so except for usual “fixed” punctures; and (so far 
as my observations go) other usual characters of the genus, except as 
otherwise stated. 
Key to Species of Trichosternus of 
Tropical Australia 
1. Mesosternum setose anteriorly; dorsal elytral intervals equal or 
nearly so (except in m onto rum) 2 
Mesosternum not setose anteriorly; alternate elytral intervals 
elevated (except scarcely so in kirrama) 9 
2. Seventh intei vals of elytra not sharply carinate at base (at most 
somewhat swollen) ; elytra without dorsal punctures 3 
Seventh intervals sharply carinate at base; elytra with (small) 
dorsal punctures 4 
3. Subparallel, prothorax quadrate; humeri subdentate; color blue- 
P ul 'P le fax 
Elytia oval, prothorax subcordate; humeri not dentate; black, 
elytia dull obscuripennis 
4. Elytra with alternate intervals moderately raised; (form de- 
piessed , coloi gieenish or bluish) montorum 
Elytra with discal intervals equal or nearly so, except at extreme 
base (f rater group) - 
5 - Male front tarsi not dilated, without squamules 6 
Male front tarsi more or less dilated, always with some squa- 
