196 Mr. ea O. Waterhouse’s descriptions 
pliatis, striarum punctis singulis basi tuberculo minuto 
instructis. 
Long. 33 lin. ; lat. 14 lin. 
This species is very close to the preceding. The head 
is nearly of the same form, but the angle made by the 
side of the anterior emargination, and the oblique side of 
the head, is less obtuse ; the sides distinctly bisinuate, and 
the cheeks are very prominent and acute; the minute 
tubercles on the surface are not crowded as in the pre- 
ceding. Thorax convex, rather thickly and strongly punc- 
tured “(crow ded at the sides) ; the sides are evenly ‘rounded, 
with the margins minutely crenulate ; ; the posterior angles 
are indicated by a small triangular tooth, behind which 
the base is gently sinuate. ‘The elytra are about } longer 
than their width at their base, the base nearly straight ; 
the punctures forming the rows are elongate and narrow, 
each puncture with a small, transverse, “shining babencls 
at the base; the interstices flat, but rendered slightly 
irregular by the tubercles at the base of the punctures. 
Pyeidium ‘with crowded punctures, and without any 
raised, central, smooth line. Anterior tibix short and 
broad, with three nearly equal strong teeth on the outer 
side, equidistant from each other. 
Hab.—Rockhampton. B. M. 
A specimen from §. Australia (Mount Alexander dis- 
trict) only differs from the above in having the thorax a 
little broader and the elytra relatively longer. 
Long. 44 lin. ; lat. 24 ln. 
Mechidius acutangulus, sp. nov. 
Oblongus, convexiusculus, piceus, subopacus. Capite 
antice triangulariter emarginato, lateribus reflexis obsolete 
bisinuatis, genis prominulis. Thorace longitudine } la- 
tiori, sat convexo, confertim sat fortiter punctato ; angulis 
anticis sat prominentibus, lateribus fortiter rotundatis, basi 
omnino rotundato, angulis posticis dente parvo acuto in- 
structis. Scutello elongato-triangulari. Elytris thorace 
vix latioribus at duplo longioribus, striato - punctatis, 
punctis elongatis setiferis, interstitiis planis. 
Long. 34 ‘ane ; lat. 13 lin. 
The Ne is not very deeply triangularly emarginate in 
front; the sides are oblique and reflexed, very ” slightly 
bisinuate ; the cheeks are slightly prominent and slightly 
acute. Thorax broadest behind the middle, gently 
