228 
At once distinguished from its allies by the conspicuous large 
and shallow depression a little within the anterior angles of the 
prothorax in which there is a cluster of very deep fovea-like 
punctures. 
N. Queensland ; taken by Mr. Koebele near Cairns. 
THALLIS. 
This genus is distinguishable from Lpiscaphula by, inter alia, 
the form of its prosternal process. In Episcaphula this process 
dilates behind the coxe in the form of a flattened lamina widest 
at its hind margin which is triangularly emarginate. In Thallis 
(as at present constituted) the prosternal process is more variable 
but does not (at least in the Australian species) take the form 
specified above. 
LT’. Macleayi, sp. nov. Oblonga; glabra; nitida; sat convexa ; 
rufa, capite postice prothorace (lateribus exceptis) elytrorum 
parte circa scutellum fascia mediana et altera subapicali 
sternis in parte et abdominis maculis nigro-piceis ; capite 
sat fortiter crebre punctulato ; prothorace transverso, antice 
vix angustato, ad basin marginato, sparsim subtiliter punctu- 
lato puncturis majoribus confuse intermixtis, lateribus late 
incrassatis et intra marginem incrassatum longitudinaliter 
sulcatis ; elytris vix striatis, seriatim punctulatis, seriebus 
postice minus obsoletis, interstitiis subtiliter punctulatis ; 
processus prosternalis modice lati parte mediana convexa, 
apice rotundata), lateribus carinatis ; antennarum articulo 
3° quam 4"* haud longiori. Long., 24 1.; lat., 11. 
Readily distinguishable from the others known to me of the 
genus by the broad thickened ridge-like margins of the prothorax 
(which are as wide as the basal joint of the antenne is long) 
within which there is a deep narrow longitudinal furrow. It 
should be noted however that strictly speaking it is not the 
actual margin itself that is thickened for when the prothorax is 
closely examined there is seen to be a fine stria-like furrow 
dividing the true margin (which is normally narrow) from what 
is really a longitudinal ridge which to a casual glance seems to 
be an extension of the true margin. 
N. Queensland ; taken by Mr. Koebele near Cairns. 
T. perplexa, sp. nov. Oblonga; glabra; nitida; sat convexa ; 
rufa, capite prothorace scutello elytrorum parte circa scut- 
ellum fascia mediana et altera apicali (his in sutura anguste 
conjunctis) prosterno mesosterni metasternique lateribus 
antennis pedibusque (tarsis exceptis) nigro- vel rufo- piceis ; 
capite sparsim sat fortiter punctulato ; prothorace transverso, 
antice leviter angustato, ad basin marginato, fere ut caput 
punctulato, lateribus sat anguste incrassatis et intra partem 
