245 
C. accedens, sp. nov. Mas. Precedenti (C. bifosso) valde 
affinis ; differt statura minus lata, prothorace quam longiori 
paullo minus quam sesquilatiori, crebre minus subtiliter 
punctulato, margine basali quam margo anticus fere duplo 
latiori, pygidio (parte antero-exteriori excepta) haud punc- 
turis minutis impresso ; cetera ut C. bifossus. 
Femina quam mas paullo minus lata magis convexa, prothoracis 
excavationibus et tuberculis subobsoletis, tibiis anticis extus 
obtuse distincte tridentatis. Long., 10—121.; lat., 5—62 1. 
This species is so like the preceding (C. bifossus) that the 
detailed description of the latter may be read as applying to it, 
subject to the distinctions noted. The puncturation of the pro- 
thorax is very widely different ; if it be closely examined it will 
be seen that the intervals between puncture and puncture are for 
the most part scarcely equal to the diameter of a puncture. I 
have seen half-a-dozen specimens of this insect apparently all 
taken in company by Mr. Lea, and have taken others singly my- 
self, and find that they vary very little except in the develop- 
ment of the prothoracic inequalities and to some extent in the 
closeness of puncturation on the pygidium. I find throughout 
the Australian Dynastides that the sculpture of the pygidium is 
a singularly unreliable character. The sculpture of the apical 
ventral segment in this species is as in C. bifossus. The front of 
the clypeus (looked at from in front) appears a trifle less strongly 
emarginate. 
N.S. Wales; Forest Reefs ; also Blue Mountains. 
C. latipes, Guér. I have seen only a single female example 
(which was taken near Sydney) of a Cheiroplatys that can be 
called “‘ oblong,” the term its author and also Boisduval use to 
describe the form of C. latipes or ‘elongate-cylindric” (Bur- 
meister’s term). As it agrees very fairly with the diagnosis in 
other respects I take the example in question to be C. latipes. It 
is however not the Chezroplatys that is evidently most common 
in the neighbourhood of Sydney, which I believe to be C. juvencus 
and refer to under that name below. Its length is 114 1. its 
breadth 51. Its color on the upper surface is nearly black, on 
the under-surface red-brown. Its head is like that’of C. bifossus 
except that the clypeus is more evenly and less strongly elevated 
in front, so that looked at from the front it appears very little 
sinuate. Its prothorax has only one impression (fairly strong in 
the example before me) and one tubercle, with puncturation 
(even closer than in C. accedens) much stronger and closer than 
that of C. bifossus, the base is distinctly margined only close to 
the hind angle. Its scutellum has no punctures except in two 
small clusters near the front. Its elytra are sculptured much like 
those of C. bifossus except that the intervals between the sub- 
