38 
I have seen a large number of examples of the large species of 
Trox (Megalotrox, de Borre) all from South-Western Australia ; 
but have not yet met with an example agreeing with the descrip- 
tion of 7. gigas. 
T’. eremita, sp. nov. Oblongo-ovalis; minus nitidus; niger 
antennis (articulo primo excepto) rufis, capite (infra clypeum) 
rufo-hirto, tibiis capillis elongatis rutis fimbriatis ; capite 
crebre rugulose punctulato distincte bituberculato, antice 
triangulari ; prothorace quam longiori fere duplo latiori, 
postice quam antice plus quam dimidio latiori, postice lobato 
(lobo ante scutellum rotundato), fere ut caput punctulato, 
supra costis minus gracilibus inzquali, lateribus modice 
explanatis vix manifeste trisinuatis, ante angulos posticos 
subrectos manifeste emarginatis ; elytris seriatim granulatis 
et tuberculorum minus elevatorum seriebus circiter 8 ornatis 
(harum serierum 2", 4* que tuberculis quam ceterarum major- 
ibus instructis, 5”, 7® que tuberculis quam granuli adjacentes 
vix majoribus instructis) ; tibiis anticis externe tridentatis ; 
processu prosternali modico, in medio acuminato. Long., 
7—8 1; lat., 4443 1. 
Bencdersdily like 7. Auguste in size and build, but with the 
elytra bearing rows of very distinct tubercles, many of which are 
fairly large, although only feebly protuberant; the tubercles 
near the base are more or less run together into a costiform 
appearance in the second and fourth series. Ido not find any of 
the nitid spots on the elytra (distinct from the tubercles of the 
series) which are present in so many of the genus. Very distinct 
from 7’. Auguste by the shape of the prosternal process also. 
The middle costz of the prothorax are very much abbreviated 
behind. This species is probably near 7’. dilaticollis, Macl., in 
which, however, the prothorax is stated to be not at all narrower 
in front than at the base, and also perhaps near 7. Brucki, Har., 
which, however, seems to be a much smaller species (long., 104 
mm.), with the clypeus not angulated anteriorly. 
Central Australia ; MacDonnell Ranges. 
T. quadridens, sp. nov. Oblongo-ovalis; sat opacus; niger, 
antennarum stipite rufo ; capite infra clypeum obscure rufo- 
hirto, tibiis capillis elongatis rufis fimbriatis ; capite obscure 
ineequaliter rugulose punctulato fortiter bituberculato antice 
vix angulato; prothorace quam longiori circiter dimidio 
latiori, postice lobato (lobo ante scutellum rotundato), 
postice quam antice circiter dimidio latiori, inzequaliter (hic 
confertim subtilius illic sparsius minus subtiliter) pune- 
tulato, supra costis sat robustis inequali, lateribus fortiter 
trilobis, angulis posticis sat acutis; elytris undulatim sat 
