tt 
This species is extremely like S. rectangulus, Blackb., and 
S. persimilis, Blackb., but differs from both by characters that 
appear to me quite inconsistent with specific identity. The most 
notable of these is the form of the prosternal process, which at 
the top is bent forward towards the head in such fashion that its 
bent-forward portion almost forms a right angle with its erect 
portion,—but this (7.e., the bent-forward portion) instead of being 
a small flattish lamina bounded posteriorly by a tubercle (as it is 
in persimilis) is a narrow keel (its outline viewed from the side 
being seen however to be slightly concave) ; while in rectangulus 
the bent-forward portion is scarcely existent being represented 
merely by the erect portion being slightly curved towards the 
head at its summit. The prosternum in front of the coxe is 
in all these three species narrow and roundly cariniform. The 
puncturation of the prothorax is in this species almost as in 
rectangulus but the sulcus of the hind part of the prothorax is 
simple as in persimilis (not dilated in its middle into a fovea as 
it is in rectangulus). 
Northern Territory of South Australia ; near Palmerston. 
N.B.—The species of Semanopterus named previously to those 
I have described are S. (Philewrus) subcostatus, Cast., S. Ade- 
laide, subequalis and depressus, Hope, and S. convexiusculus and 
depresstusculus, Macl. None of them are described sufficiently 
for confident identification and it is possible that I may have 
described some of them, especially the first,—the description of 
which would apply so far as it goes to any Semanopterus. I, 
however, have species in my collection which seem likely to be 
Adelaide, subequalis, and convexiusculus and are certainly dis- 
tinct from those I have described. I should judge from their 
names that S. depressus and depressiusculus cannot be identical 
with any of my species unless it be S. dentatus,—but they are 
both described as having costate elytra, while dentatus is of all 
the Semanoptert known to me the only one on which no clearly 
defined elytral costee can be traced. 
ISCHIOPSOPHA. 
I. Bowrker, sp. nov. Nitidissimus; lete viridis (vel certo ad- 
spectu ceruleus), antennis palpisque piceis plus minusve 
viridi-micantibus, abdominis suturis parte mediana macu- 
lisque lateralibus certo adspectu nigricantibus ; supra tota 
creberrime omnium subtillissime coriacea ; capite sparsius 
subtilius punctulato, clypeo profunde bifido; prothorace 
(lobo basali excepto) quam longiori (et postice quam antice) 
duplo latiori, latera versus leviter sparsim (in disco vix 
manifeste) quam caput multo minus fortiter punctulato, 
lobo basali magno scutellum fere obtegenti ad apicem emar- 
