BY THE REV. T. BLACKBURN. 
1413 
Compared >vith S. minor this species is comparatively longer 
and narrower ; the head and prothorax are scarcely different 
except in the greater length (in proportion to the width) of the 
latter, and the absence of sinuation in the hinder part of its 
lateral outline ; the sculpture of the elytra does not run in quite 
so oblique a direction ; the sculpture of the pygidium is quite 
different, as follows — in the male it consists of rather close 
puncturation at the sides and very sparse in the middle, without 
any transverse wrinkles, and in the female of close and almost 
uniform puncturation with scarcely any trace of transverse 
wrinkling ; while in S. minor it consists of close puncturation in 
both sexes (in the male, a little more sparse in the middle) 
accompanied by a very conspicuous system of short curved 
wrinkles or scratches ; the second joint of the hind tarsi is baiely 
two-thirds the length of the first, while in S. minor the two are 
about the same length. 
From S. angustatus this insect may be distinguished by its 
longer and narrower prothorax, and its pygidium only fringed 
with hairs (while in angustatus fine erect hairs clothe the whole 
of the surface), and from /S. convexiusculus by its very differently 
sculptured elytra. The other described species are all much 
larger. 
Coonabarabran, N.S. Wales ; taken by Mr. Sloane. 
S. MINOR, Blackb. 
I have lately received from Mr. Sloane, of Mulwala, specimens 
taken in various localities in N. S. Wales and Victoria which 
have the sides of the prothorax behind much more strongly 
sinuate (almost excised in fact) than in the type of this specie.s, 
but as I can discover no otlier difterence whatever, and moreover 
find some variability in this respect even in South Australian 
exanqiles, I do not think they can be treated as distinct. 
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