32 ISIr. T. Vernon Wollaston on the 
Being precisely similar in colour and sculpture, I should 
certainly have regarded this Heterarthrus as the other sex 
of the following one had not the more numerous examples 
of the latter revealed the fact that both males and females 
(as proved by the construction of their tarsi) are un- 
doubtedly present. Hence I have no choice but to treat 
the two female individuals from which the above diagnosis 
has been drawn out as specifically distinct from the 
H. paUidipennis. Regarding tliis conclusion, therefore, 
as almost unavoidable, I may add that the H. Leioisii is 
not only larger than its ally, and with appreciably longer 
legs and antenna, but that its rostrum likewise is a little 
more lengthened (^vith the antennte implanted just before, 
instead of at, the middle point), and its third tarsal joint 
is just perceptibly more expanded and bilobed. It was 
taken by Mr. Lewis near Nagasaki, in the island of 
Kushiu, by beating old hedges. 
b. Anteiince in medio rostri {paulo brevioris) insertcB. 
Pedes paulo breviores. 
13. Heterarthrus paUidipennis, n. sp. 
H. forniJi, sculptura coloreque ut in specie prascedenti; 
sed corpus paulo minus, rostro, antennis pedibusque sen- 
sim brevioribus, antennis in medio (nee mox ante medium ) 
rostri insertis. 
. Long. Corp. lin. circa 2. 
Captus prope Nagasaki, in ins. Kushiu; cum specie 
precedenti degens. 
I have afready implied that the present Heterarthrus 
is so like the preceding one that I should have taken it 
for a mere sexual form of the latter, had I not found a 
structural difference in the tarsi of the few examples now 
before me, which would seem to imply that both males 
and females are undoubtedly indicated; and I am there- 
fore constrained to look upon the //. paUidipennis as 
specifically distinct ft'om the H. Leicisii. The former 
may consequently be defined as being merely a little 
smaller than its ally, and in having its legs, rostrum, and 
antennre appreciably shorter,— the latter, moreover, being 
implanted more strictly medially than ante-medially. 
Mr. Lewis appears to have captured his specimens, along 
with those of the last species, out of old hedges, near 
Nagasaki, in the island of Kushiu. 
