560 Mr. T. Vernon Wollaston on the 
those on the hitter are not only more approximate, but are 
situated close behind the anterior margin. And there is 
also another feature which distinguishes this genus from 
every other with which I am acquainted, — namely the 
fact that its two hinder femora are fringed beneath, in the 
middle, with a narrow edging of short fulvescent pile ; 
whilst the tibiie (of the same pair of legs) are arcuated, 
and furnished on their inner side, towards the base, with a 
fascicle of elongated hairs. The legs are thicker than in 
Catolethrus, and the spine at the internal angle of the 
tibise (especially the four posterior ones) is larger and more 
robust. 
72. Glceodema (nov.gen.^. — The two beautiful insects, 
communicated by Mr. Pascoe, on which the present genus 
is founded (and Avhich were captured by Mr. Wallace at 
Dorey and Saylee in New Guinea), are so remarkably alike 
in colour, outline, and sculpture that I cannot feel alto- 
gether certain that the very peculiar discrepancy AA'hich 
they display in the construction of their rostrum may not 
be merely sexual ; and if this should prove to be the case, 
it follows that they must be treated eventually as members 
of a single species. With but a solitary example however 
of each of them to judge fi'om, I feel scarcely warranted in 
assuming that a character so important and conspicuous 
is indicative only of the sex ; and I have therefore regarded 
them as specifically distinct. The feature to which I 
allude is the shape and length of the rostrum, — which in 
one of the individuals now before me (and, I may add, 
very much the larger one of the two) is gradually A^ndened 
towards the tip to a most marvellous extent, whilst in the 
other it is but shghtly increased in breadth. 
In other respects Glaodema is remarkable for the large 
size, fusiform outline, and somewhat convex, higlily- 
polished, almost unsculpturcd surface of the insects of 
which it is composed, — Avhich moreover are anomalously 
variegated with red and black (a very unusual combina- 
tion amongst the Cossonidce). Then* head is elongate, 
and greatly exserted ; their eyes are rounded, rather promi- 
nent, and wide apart ; their prothorax is convex, and per- 
fectly even (being quite free both from depressions and 
keel) ; and their limbs are long, but much incrassated, — 
the second funiculus-joint being remarkably shortened, 
the club narrow and acuminated, the four hinder tibife (as 
in Phaccgaster, Exonotus, and others of the immediately- 
