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canalicule fundo sat crasse squamose) punctulato, canalicula 
ante medium ut excavatio variabilis (pone medium ut ex- 
cavatio ovalis angusta) dilatata, lateribus sat rotundatis ante 
basin sinuatis (superne visis profunde excisis apparentibus) ; 
scutello minus distincte punctulato; elytris tricostatis 
(sutura costata haud inclusa), costis internis ultra medium 
distinctis externa fere obsoleta, interstitiis sat crebre sub- 
seriatim punctulatis, partibus lateralibus et apicalibus crebre 
subtiliter confuse punctulatis; segmentis ventralibus an- 
terioribus punctulatis. 
Maris prothoracis canalicule excavatione antica sat profunda 
circulari, feminz minus profunda magis elongata; maris 
pygidio confertim subconcentrice rugato, femine hirsuto 
crebre sat fortiter punctulato (antice et ad latera sat sub- 
tiliter rugato. Long., 7?—91.; lat., 4442 ], 
This species is very like S. rectangulus, Blackb. It is dis- 
tinetly larger and more elongate and may be readily distinguished 
by its anterior ventral segments being quite coarsely squamose- 
punctulate and its pygidium pilose in the female. 
Victoria and N.S. Wales. 
PALMERSTONIA. 
Under this name I separated the Australian species that had 
been attributed to Horcnotus, chiefly on the ground of their 
females being devoid of prothoracic excavation or tubercle. 
P. (Horonotus) variolicollis, Fairm. In Tr. Roy. Soc, S.A, 
1895, p. 40, I expressed the opinion that this is likely to be 
identical with P. (H.) optata, Shp. I have received from Mr. 
Cowley examples of Dr. Sharp’s species taken in N. Queensland 
and with them other examples that may possibly represent a dis- 
tinct species and may be Fairmaire’s very briefly described insect. 
They differ from typical optatws in having the cephalic-horn much 
shorter and of the form of an erect triangular lamina, and the 
coarse puncturation of the sides of the prothorax continuous 
across the base. 
P. pusilla, sp. nov. Sat brevis; picea, supra nitida; subtus 
sat dense fulvo-hirsuta ; prothorace grosse ruguloso ;_ elytris 
vix punctulatis. 
Maris capite lamina triangulari verticali armato; prothorace 
antice retuso ; hujus parte retusa (area longitudinali mediana 
sat alta sparsim punctulata excepta) ut prothoracis superficie 
cetera crebre grosse rugulosa, haud ultra prothoracem 
medium extensa, postice tuberculo parvo armata. 
Fem. latet. Long., 55—64 1.; lat., 34—32 1. 
The males of the Dynastides vary to such an infinite extent in 
their sexual character that I cannot but recognise the possibility 
