Australian and Tasmanian Byrrhide. 139 
twice as long as the second, the third is variable between 
the species, the seventh is transverse, and the eighth to 
eleventh form a rather wide club. In simplicicornis, 
however, the antennz are otherwise. 
The third joint of the tarsi is lamellate beneath in all the 
species, but the lamellze are sometimes so thin that when 
closely pressed to the tarsi they cannot always be seen; in 
vaucus on one specimen I can see them clearly, in mixtus 
they are very thin, and except from the side and in a good 
light they appear to be absent, in multicolor they are in- 
distinct; but in all the others they can be seen clearly and 
from the sides are very conspicuous. 
In raucus and mixtus the epipleurs of the elytra are 
comparatively narrow and suddenly terminate at the hind 
coxe; in the others they are very much wider, and 
especially in simplicicornis ; in bryophagus they are strongly 
depressed at the hind coxee. 
In carissimus and dives the intercoxal process of the 
prosternum is wider than in the others, in mudéicolor it is 
considerably narrower. 
The species may be tabulated as follows :— 
Elytra tuberculate— 
Prothorax with punctures . : é : carissimus. 
Prothorax with ridges : : : dives. 
Elytra without tubercles— 
Upper-surface hairy. 
Upper-surface not uniformly coloured ‘ multicolor. 
Upper-surface uniformly coloured. 
Clothing uniform : ‘ : apd TUUCUS. 
Clothing not uniform . Z : : : nrictuse 
Upper-surface glabrous. 
Under-surface black . : 3 : F bryophagus. 
Under-surface reddish. 
Antennal joints gradually increasing in 
width . : : : : : simplicicornis. 
Antenne with terminal joints forming a 
distinct club . : : , é grifithi. 
PEDILOPHORUS RAUCUS, Blackb. (Byrrhus, Blackb.), Trans. 
R. Soc. 8. Aust., 1891, p. 183; 1903, p. 173. 
Two specimens from New South Wales (obtained in 
flood débris on the Hawkesbury River) were named by 
