206 
(some of them exactly) with the important tarsal characters that 
he indicates and because moreover if M. Guillebeau’s description 
of the metasternum be held as rigidly accurate I should have to 
consider that I have not seen one of the Okibromorphini among 
all the numerous Australian Phalacride before me. 
I cannot bring myself to think M. Guillebeau right in his 
treatment of Litochrus ; I notice however an obscurity in his 
remarks which suggests the possibility of a printer’s error. In 
his tabulation he distinguishes Litochrus from his new genus 
Micromerus by the former having the first joint of the posterior 
tarsi ‘‘ very elongated,” while the latter has it “two or three 
times as long as the second joint.” Then he adds a note that in 
Micromerus the legs are probably less slender and the first joint 
of the tarsi less elongated than in Litochrus (which apparently 
he has not seen). But Erichson in characterising Litochrus merely 
says that the basal joint is longer than the second, and Lacordaire 
calls the second joint ‘a little” shorter than the first. This is a 
tangle which suggests the question whether in M. Guillebeau’s note 
(quoted above) ‘‘less” may have been accidentally substituted 
for “more.” I have in my collection an example from Tasmania 
which I have no doubt is Litochrus brunneus, Er., and its hind 
tarsi have their basal joint less than twice as long as their second 
joint. I have also some species from tropical Australia in which 
the basal joint is even more than three times as long as the 
second. It would not however be safe either to call these latter 
Micromerus or to give them a new name; consequently I must 
apply the name Litochrus to all the Australian Olibrinit known 
to me. 
A. Mesosternum visible only with the appearance of being a 
narrow scarcely prominent front margin to the meta- 
sternal lobe. 
B. Epistoma emarginate close to the eye. 
C. Metasternal lobe protruding beyond the intermediate 
coxee (Olibrint). 
D. Basal joint of posterior tarsi very elongate ... Litochrus 
DD. Basal joint of posterior tarsi less elongate, but 
considerably longer than second joint Micromerus 
CC. Metasternal lobe less produced (according to M. 
Guillebeau not passing the intermediate coxe) 
(Olibromorphini). 
D. Second joint of posterior tarsi much longer than 
basal joint... ass . Parasemus 
(The other genera are not known to be Australian). 
BB. Epistoma not emarginate (Phalacrini). 
C. Elytra with a subsutural stria_... ... Phalacrus 
(No other genus recorded in Australia). 
AA. Mesosternum well developed (Hustilbini). 
B. Apical joint of maxillary palpi not dilated ; basal pas 
of hind tarsi not elongate Phalacrinus 
(No other genus recorded as ; Australian). 
