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of its pronotum. The presumable types of L. nitidior^ MacL, 
and 1j. ohecurus, MacL, are mere colour vars. of picipennis. 
L. rifhefactus, MacL, is in no danger of confusion with 
the seventh group, but it is desirable to note that its colour 
is extremely inconstant, the elytra propygidium and pygidium 
varying from a rusty testaceous, or a distinctly red, colour to 
black. The darker specimens are for the most part males. 
L. suhsquamosus, MacL A single specimen — no doubt 
the type — is pinned into the label bearing this name in the 
Macleay Museum. It is extremely close to />. riihefdctua, 
MacL, especially the dark examples of that species : but the 
difference in the sculpture of the pronotum, in combination 
with great distance of hdhitat, justify the retention (at any 
rate, provisionally) of a separate name for this insect. It is 
difficult to understand why Macleay placed rjihef (ictus and 
suhsquamosus in different sections of Liparetrus, as having 
the "upper surface entirely glabrous'' in the case of the for- 
mer, and the "body squamose" in the case of the latter. The 
(presumable) types of the two do not differ at all in that 
respect from each other. 
L. rufpennis, MacL The presumable type of this insect 
(in the Macleay Museum) is devoid of distinct puncturation 
on the propygidium and pygidium — a very unusual character 
in Liparetrus. Macleay does not mention it, unless the 
phrase ''pygidium glabrous" is intended to refer to it. 
L. ovatus, MacL I have examined the presumable type 
of this species in the Macleay Maseum. There are specimens 
in the collection of Mr. H. J. Carter with their elytra black, 
which I cannot distinguish otherwise from the type. They 
are from W. Australia (the origjinal locality). 
L. posticalis, Blackb. This species is certainly rather 
close to that discussed above as L. rufipennis, MacL, but I 
believe it to be distinct, although the examination of more 
specimens from the same locality (Port Darwin) would be de- 
sirable to settle the point finally. It is of very evidently nar- 
rower and more elongate build than any of the numerous 
specimens that I have seen of its ally, the prothorax especi- 
ally being longer in proportion to the width. There are also 
differences in the puncturation of the head, the punctures of 
the clypeus being more coarse and sparse and those of the 
frons distinctly asperate, which they are not in the Queens- 
laud insect, and the tarsi are manifestly less robust than in 
either sex of that species. I believe the type to be a female. 
L. juvenis, Blackb. In my description of this species I 
called the basal joint of the hind tarsi ''vix breviorem," as 
compared with the second joint. It is, however, sufficiently 
