36 
belongs to the Serzcoides and can be separated from Colpochila 
only by the peculiar palpi of the male. Jt seems undesirable to 
omit describing this insect in spite of the imperfection of the 
male type, as it is from a remote inland locality whence more 
material cannot be expected at any early date ; nor does it seem 
practicable to found a new genus on it without examining an un- 
broken male. If the difference from Colpochila prove to be 
limited to that of the male palpi I doubt whether it can rightly 
be treated as generically distinct from Colpochila, and, for the 
present at any rate, it seems best to place it in that genus, of 
which it has entirely the facies. In my tabulation of Colpochila 
(Proc. L.8.N.S.W. 1890, pp. 520, &c.) it falls under “ EE” on 
p. 521, along with C. gigantea, Burm., from which it is very 
distinct by many characters—znter alia its nearly white color 
and the antennal flabellum of the male consisting of only three 
joints. The characters of the palpi in the male of course dis- 
tinguish it from all the other described species of the genus. 
Lake Callabonna ; taken by Mr. Zietz. 
CALLABONICA (gen. nov. /feteronycidarum). 
Mentum quadratum, tectiforme ; labrum (speciel typice) verti- 
cale supra clypeum sursum productum; antennz (speciei 
typice) 8-articulate, flabello 3-articulato, articulis brevibus ; 
alee obsolete ; cetera ut Heteronycis. 
It seems impossible to refer the species for which I propose 
this name to any hitherto characterised genus ; its appendiculate 
claws aborted wings (which are only about half as long as the 
elytra) and remarkable mentum taken together render it easy. of 
identification. The mentum is somewhat of the form known in 
geometry as a “triangular prism,” being formed of two plane 
surfaces meeting down the middle line and sloping down from the 
middle line on either side, the extreme front also being sloped 
(or obliquely truncate) and representing I presume. the ligula. 
Unfortunately there is not an example that can be devoted to 
dissection. The general appearance is that of a very short 
Heteronyx, with very convex elytra much rounded on their 
lateral outline. The genus is no doubt near Pseudoheteronyx but 
differs from it inter alia by the form of its mentum, by its wings 
not being altogether wanting, and by its longer metasternum 
(which however is somewhat shorter than in Heteronyx). It also 
bears some general resemblance to Byrrhomorpha from which 
however its appendiculate claws at once separate it. It is cer- 
tainly incapable of flight, and no doubt is found (like Pseudo- 
heteronyx) under stones. 
C. propria, sp. nov. Nitida; nigra, antennis palpisque testaceis, 
pedibus rufescentibus; capite equaliter confertim sat fortiter 
