252 
scarcely sinuously, incurved close to the base. The coste of the 
elytra are much like those of meridianus, but do not extend so 
far back and the intervals between them are more finely and less 
plentifully punctulate. This species is also distinguished from 
most of its congeners by the pilosity of its pygidium and from 
nearly all of them by the sculpture of that segment. 
W. Australia ; sent to me by Messrs. J. J. Walker and Lea. 
S. angustatus, Blackb. This species is certainly rather close to 
S concentricus, but I am convinced it is distinct. The principal 
difference seems to be that the coste of its elytra are markedly 
feebler—in fact almost obsolete ; and that its pygidium is in the 
male notably less closely (and not concentrically) strigose with a 
larger and more nitid punctured space in the centre in which the 
strigosity is much less distinct, while in the female the pygidium 
is (not closely granulose-punctulate but) confusedly and by no 
means closely strigose, with an evident intermixture of defined 
punctures—in fact not much different from the same segment 
in the male. 
S. tricostatus, sp. nov. Convexus; nitidus; piceus; subtus 
fulvo-hirsutus ; capite strigoso et sat distincte punctulato, 
tuberculo armato; prothorace quam longiori plus quam 
sesquilatiori, pone medium leviter canaliculato, sparsius (ad 
latera magis crebre) sat distincte punctulato, lateribus sat 
rotundatis ante basin sinuatis (superne visis profunde 
excisis apparentibus) ; scutello puncturis nonnullis impresso ; 
elytris tricostatis (sutura costata haud inclusa), costis (ut 
S. Adelaide, Hope) bene elevatis et ad callum subapicalem 
continuis, interstitiis sat crebre subseriatim punctulatis, 
partibus lateralibus et apicalibus crebre confuse sed quam 
interstitia vix minus fortiter punctulatis. 
Maris prothoracis canalicula ante medium ut excavatio cir- 
cularis sat profunda dilatata; pygidio confertim subconcen- 
trice rugato. 
Fem. latet. Long., 7$—85 1.; lat., 4—44 1. 
This is a very distinct species with strongly sculptured elytra 
almost exactly like those of the insect that I take to be 
S. Adelaide, Hope, but with a prothorax closely resembling the 
prothorax of S. carinatus and persimilis. A single male example 
sent by Mr. Cowley from N. Queensland seems indistinguishable 
but perhaps the knowledge of the females might reveal differences. 
W. Australia ; near Geraldton (Lea), We. 
S. distributus, sp. nov. Convexus; nitidus; piceus vel rufescens, 
subtus fulvo-hirsutus ; capite transversim vel fere subcon- 
centrice rugato, tuberculo armato ; prothorace quam longiori 
sesquilatiori, profunde canaliculato, sparsius subtilius (in 
