214 
quam longiori fere duplo latiori, crebrius subtiliter granu- 
lato, ad latera explanato (quam 4. Walkeri multo minus 
late), antice sat fortiter emarginato, postice bisinuato in 
medio vix emarginato, lateribus leviter arcuatis postice 
manifeste vel vix sinuatis, angulis omnibus acutis, latitudine 
majori ad medium posita ; scutello granulato; elytris quam 
prothorax paullo latioribus, striatis, striis punctis confertis 
subquadratis impressis, interstitiis sat crebre minus perspicue 
granulatis [alternis (presertim 3°) sat manifeste convexis, 2° 
quam cetera multo augustiori|, tibiis anticis subgracilibus a 
basi ad apicem minus fortiter dilatatis, angulo externo 
apicali acuto ; tarsis setis sat crassis subtus sparsim vestitis. 
Long., 4—43 1.; lat., 14—2 1. 
A somewhat inconspicuous species, apparently always covered 
with a very dense earthy indumentum completely concealing the 
characters. Its most reliable character seems to be the excep- 
tional narrowness of the second elytral interstice, which near the 
apex is scarcely half as wide as the third. Compared with 
H. Walkeri, its prothorax is seen to be much less rounded later- 
ally and to have a much more narrowly explanate border, while 
the granules of its elytra] interstices are much less conspicuous 
and confused. Its elytral strize, moreover, are scarcely rightly 
called ‘‘punctulate,” but are divided by closely placed fine ridges 
which connect the interstices inter se. The inequality of its 
elytral interstices distinguishes this insect from H. torridum and 
H. Meyricki, and inter alia the separation of the clypeus from 
the hinder part of the head distinguishes it from the species of 
the H. diversum group, while its elongate and slender front tibiz 
also distinguish it from H. torridum, Kc. 
Gulf of Carpentaria, Thursday Island, &c. 
H. Adelaide, sp. nov. Sat late ovale; opacum ; piceo-nigrum, 
pilis brevibus erectis aureo-fulvis dense vestitum ; capite sat 
lato, crasse rugulose punctulato, clypeo a fronte sulco pro- 
fundo diviso antice profunde rotundatim emarginato ad 
latera latissime (quam H. Walkeri magis late) producto; 
oculis nullo modo divisis; antennis brevibus prothoracem 
medium haud multo superantibus, articulis 8-10 transversis ; 
prothorace quam longiori duplo latiori, crebre ruguloso (quam 
caput minus grosse) et subtiliter granulato, ad latera sat 
late (quam //. Walkert vix minus late sed minus perspicue) 
explanato, antice sat fortiter emarginato, postice bisinuato, 
lateribus sat rotundatis postice nullo modo sinuatis, angulis 
anticis subacutis posticis rectis vel fere obtusis, latitudine 
majori paullo ante basin posita; scutello granulato; elytris 
quam prothorax parum latioribus, striatis (striis, binis in- 
ternis exceptis, vix impressis et perspicue nec grosse punct- 
