Genera of the Cossonidce. 575 
abbreviated, and the club less developed ; in its protliorax 
being generally more conspicuously narrower than the 
elytra, less elongate, and not so deeply constricted in 
front ; in its scutellum being less transverse ; in its meta- 
sternum being appreciably shorter ; and in its feet being 
slenderer, with their third articulation usually smaller and 
narrower, and much more minutely bilobed. Its eyes, as 
in Oxydema, are extremely prominent, and its sculpture is 
rather coarse. The first of the three species, however, 
which are described in this paper ( — namely the O. major), 
I may add, is not quite so typical of the group as the other 
two ; nevertheless I do not think it can be looked upon as 
an Oxydema. 
94. Aphanocorynes {nov. gen.) — In its rather large 
size, elongate, narrow, subfusiform outline, and deep-black 
hue the insect for Avliich the present genus is founded, and 
which has been communicated by Mr. Pascoe (as having 
been captured by Dr. JNIasters at King George's Sound, 
in southern Australia), has somewhat the appearance at 
first sight of Oxydema — which occurs in Ceylon and the 
islands of the Malayan archipelago. Nevertheless it 
differs in its body being more depressed, and much more 
finely and closely sculptured, in its elytra being less at- 
tenuated posteriorly, and without any tendency to be sepa- 
rately rounded-off at their extreme apex, in its rostrum 
being a litle shorter and entirely parallel, and in its club 
being very much less developed. Indeed this latter is even 
smaller, narrower, and more acuminated than in even the 
typical Rhyncoli. Its protliorax too (which however, as 
in that genus, is deeply constricted at the apex) is not 
altogether even, — it being Avidely, but lightly, impressed 
in the centre behind ; and its thix'd tarsal joint is more 
evidently dilated and bilobed, and the terminal one is 
shorter, than is the case in Oxydema. 
95. Orthotemnus {jiov. gen.). — As in the two pre- 
ceding genera, the type of the present group (which ap- 
pears to be extensively spread over the islands of the 
Malayan archipelago) is a comparatively large and elon- 
gate insect, and of a dark hue ; but it recedes in many 
important particulars from the neighbouring forms, — par- 
ticularly however in its flattened surface, and elongate, 
triangular protliorax, which is very straightly truncated at 
the base (where it is of the same width as the elytra — 
