Notes on Australian Coleoptera. 177 
short and transverse; elytra broader than the thorax, with 
the anterior angles carinated, they are oval and depressed ; 
legs rather strong; anterior tibize terminated by a spine, 
and having another on the upper part of their emargination, 
which is short. Tarsi not sensibly dilated in the male, with 
the first article rather long, the three following short and 
triangular ; those of the anterior part having below some 
hard hair, but neither lamellze nor brushes. 
The only known sort belonging to this genus, is the 
Platysma Flindersii of White, of which his Sturti is only 
a mere variety. 
This beautiful insect is found but rarely in South Aus- 
tralia. I have received one specimen from the Rev. Dr. 
Bostock, as having been taken on the Swan River. 
FORTICOSOMUS. 
The formation of this genus is due to Mr. Schaum 
(“* Journ. of Entomology”). It is formed on an insect Felix, 
which is not uncommon in Victoria, and extends itself in 
the interior at least as far as the Darling River and Cooper’s 
Creek. 
The following species appear to belong to the same genus 
which, by its tarsi being very dilated in the male, and without 
lamellze, can only be placed in this family. | 
Forticosomus Grandis: length 9’; of a brilliant brownish 
black; headlarge, and bi-impressed between the eyes; thorax 
much broader in the front than behind, rounded laterally, 
with the anterior angles prominent, and the posterior ones 
well marked. Tke lateral margin becomes very broad 
towards the posterior angles; the transverse impression in 
front is pretty well marked, and another is seen backwards ; 
the longitudinal suicate moderate ; the elytra are broad, de- 
pressed, striated, and impressed laterally ; the humeral 
angles rather rounded. 
From Cooper’s Creek. 
This insect differs from Felix by its much greater size, 
and the form of the posterior angles of the thorax. 
Forticosomus Rotundypennis: length 44; of a dark, 
glossy brown ; head with two short and feeble impressions 
between the eyes ; thorax transverse, broader in front than 
behind, with the sides rather rounded, and all the angles 
well marked; elytra broad, rather short, rounded laterally, 
