112 Notes on Australian Coleoptera. 
Port Denison. 
Note.—This may be a distinct species, but having only 
seen one specimen of it, I think it prudent to wait till more 
are discovered. 
Siiphomorpha Amabilis: length 42’; head black, with the 
parts of the mouth and antenne of a reddish brown; thorax 
yellow, with a large black spot occupying its centre ;. elytra 
yellow, with a black spot on the base near its centre; the 
sutura, the extremity, and a very broad transverse band on the 
middle of the same colour ; this band is dentated on its sides, 
and does not extend to the margin; inferior parts of the 
body and legs of a light brown. 
Port Denison. | 
Stlphomorpha Marginata: length, 3’; very nearly allied to 
Cuttiger, but smaller, of a dark brown; parts of the mouth 
and antenne of an orange yellow; lateral margins of 
the thorax and of the elytra of the same colour; the latter 
entirely smooth; a yellow spot on the sutura of an oval 
form, but ending in a point towards the scutellum; this 
spot does not extend so far towards the latter organ as 
in Guttiger; lower parts of the body and legs of a darkish 
brown. 
Melbourne and Sydney. 
Silphomorpha Bumaculata: length 6’; very nearly allied 
to Colymbetoides, but narrower ; no red margin to the thorax, 
and a very narrow one to the elytra; the yellow spot on the 
elytra almost round, or rather oblong. 
Rockhampton. | 
Silphomorpha Biplagiata: length,64'; also very nearly 
allied to Colymbetoides, and having the same broad and 
depressed form; no red margin to the thorax, nor to the 
elytra; the yellow spot of the latter round, or rather 
oblong. 
Brisbane. 
Silphomorpha Discoidalis: length 3’; nearly allied to 
Guttiger, but smaller and more oval; of a light reddish 
brown, very brilliant; sides of the thorax lighter; elytra 
black, with the external margin brown; a large broad spot 
of the colour of the thorax covering the scutellum, and run- 
ning along the sutura; its external side keeping an oblique 
direction; the surface of the elytra is very smooth; there 
is a weak sutural stria, and a few others more feeble on the 
surface (they can only be seen with a magnifying power) ; 
under sides red; legs yellow. 
