526 Mr. DMBharp on some new 
puncturation. Elytra shining, and without pubescence, 
yellow, infuscate at the base, and broadly black at the 
apex. Legs yellow, slender. 
In this species the small intermediate joints of the 
antenne are very difficult to count, and I have not dis- 
tinguished more than four, in which case there would 
only be nine joints in all. 
The individual described was found on the Waianae 
mountains, Oahu, by beating dead branches of trees, at 
an elevation of 2000—3000 feet, in July, 1877, in com- 
pany with C. punctatus and other species. (No. 333). 
I have investigated the characters of the seven species 
just described only in a very imperfect manner: the 
structure of these insects renders them very difficult to 
expand, and when expanded they are very fragile, and 
their pubescence rubs off with great facility ; hence the 
single individual (or in some cases two) of each species 
has necessarily been subjected to but little manipulation. 
I have not been able to dissect any specimen, and the 
peculiar structure cannot be ascertained with precision 
in the absence of such process; but, so far as I can see 
the characters, they are these :— 
Antenne 11-jointed ; basal joint very large, and shaped 
and curved in such a way as to adapt it exactly to the 
small hollow under the eye when the antenne are with- 
drawn under the head; joints 3—8 small, and subconnate 
inter se; the articulation between the 3rd and 4th joints 
particularly indistinct; joints 8—11 forming a very elon- 
gate and loosely articulated club ; the 9th and 10th more 
or less dilated and angulate internally. Head much 
narrower than the prothorax, with very convex circular 
eyes, which are not at all divided. Prosternum very 
small, and greatly hollowed for the accommodation of 
the inflexed head ; the front coxe separated by a moderate 
distance. Mesosternum entirely concealed, perpendicular 
in direction, or rather deeply hollowed by being thrust 
back over the metasternum, so that a large hollow is 
formed for the reception of the apical joints of the 
antenne ; middle coxe very widely separated. Meta- 
sternum protuberant in the middle in front, marked on 
each side by a very deep transverse furrow, which is 
curved forwards in the middle, and serves to receive the 
middle leg; the hind part more or less deeply impressed 
