380 Mr. F. Bates's descriptions^ §-c. 
strongly nor so widely depressed, the sides less strongly 
rounded and gradually narrowed from the middle to the 
hind angles, and the base is broadly rounded or lobated : 
scutellum triangular, pointed behind : elytra rather nar- 
rowly ovate, with rows of rather large, oblong, strongly 
impressed punctures; underside black, moderately shining; 
abdomen finely and rather closely punctured ; legs glossy 
black ; antennas and tarsi dark chestnut-brown. 
Long. 3^ lin. 
Hab. — Swan River, W. Australia. Two examples. 
Judging from description, this species will be very near 
to O. (jnesioides, Pasc. ; but there appear to be sufficient 
differences — joined to the Andely different locality — to con- 
stitute it a good species. 
