Notes on Australian Coleoptera. 127 
SILTOPIA. 
Mentum deeply emarginated, without any tooth ; its wings 
elongated and acute ; antennee thick, longer than the head 
and thorax united, with their first article rather large, the 
two following small and almost equal; the others increasing 
in size, rather compressed and almost quadrangular ; the last 
thick at its base and pointed at the extremity ; labrum 
almost square, rather transverse and strongly emarginated 
in front; palpi with their second article the longest and 
arched, the third shorter and rather scutiform, the fourth 
sunk at the base in the preceding, subulated and obtusely 
pointed at its end; mandibule large, strong, advanced, 
strongly arched and very pointed at the extremity ; legs 
rather strong; anterior tibie straight, but strongly emarginated 
on their interior side; anterior tarsi not dilated, with their 
first four articles triangular ; body depressed ; head triangular, 
connected with the body by a very short neck; thorax 
rather cordiform, narrower behind than in front; elytra 
parallel, rounded at the humeral angle, shorter than the 
abdomen. 
Siltopia Tricolor: length 34°; general colour of a light 
brown ; head black, and elytra yellow ; thorax marginated 
laterally, having a longitudinal sulcate in the middle, a 
faint transverse impression in front, and two strong rounded 
ones behind; elytra feebly striated; antennze of a rather 
dark brown. 
I have one specimen from the Clarence River, and Dr. 
Howitt has another from Paramatta. 
TERAPHIS. 
Mentum deeply emarginated, with its centre advanced 
and forming a sort of broad rounded tooth; the 
wings large, protruding, arched and rounded at their 
extremity ; labrum transversal and emarginated in front ; 
palpi rather long, with the second article long, strong and 
rather dilated; the third short and conic; the last oval, 
rather inflated and pointed ; antennze strong, about as long as 
the head and thorax united ; with the first article long and 
thick, the second short, the third the longest and conical, 
the others increasing in thickness till the last; they are 
granuliform and oblong, the last rounded at the extremity ; 
head oblong, narrowed behind the eyes; thorax large, 
broad, rounded laterally ; elytra rather broad, oval; legs 
