18 Mr. H. W. Bates on the Longicorn Coleoptera 
lustre in certain lights. Body beneath ashy. Legs blackish, 
ringed with ashy. 
¢ Terminal abdominal segment with both dorsal and ventral 
plates deeply notched. 
2 Ovipositor projecting one line and a half beyond the tips 
of the elytra; ventral plate deeply notched. 
A common insect on branches of fallen trees in the forest, 
both on the Upper and Lower Amazons, 
Genus CALLIPERO, noy. gen. 
Body elongate, narrow; head and thorax of nearly equal 
width, and narrower than the elytra. Muzzle short, lower lobe 
of the eyes short, and narrower below than above. Thorax with 
a slight protuberance behind the middle, but free from lateral 
spines or tubercles. Elytra without lateral keels, clothed with 
short sete. Sterna simple. Antenne moderately elongated ; 
third to seventh joints thickened (the seventh thicker than the 
rest), and densely clothed on their under surface with short 
set, besides the usual longer bristles which exist on all the 
joints (except the first) both above and beneath. Ovipositor of 
the female not exserted; terminal abdominal segment elongated 
and conical, with the dorsal plate pointed, and ventral truncated. 
Legs moderately elongated ; thighs clavate; basal jomt of pos- 
terior tarsi as long as the three following taken together. 
This genus differs from all the genera of Acanthocinite known 
to me by the shape and clothing of the third to the seventh 
joints of the antenne. In shape of body and style of coloration 
the species composing it might easily be mistaken for Ceram- 
bycideous insects of the genus Rhopalophora. 
Callipero bella, un. sp. 
C. elongata, capite .thoraceque chalybeis, azureo vittatis: elytris 
purpureis, sutura azurea, maculis duabus basalibus aurantiacis : 
corpore subtus azureo. Long. 5 lin. 9. 
Head steel-blue, forehead dusky, cheeks grey, a pale blue 
vitta extending from the middle of the front to the occiput. 
Antenne black. Thorax steel-blue, a narrow central vitta, and 
on each side a broad lateral one, pale blue. LElytra elongated, 
broader than the thorax, tapering to the apex, and broadly trun- 
cated ; surface inthe middle with three faint, smoothed, raised 
lines, thickly punctured towards the base, and covered with finer 
punctures, each emitting a longish, erect, black bristle; dark 
blue, changing to purple, suture and apical margin bordered 
with light cobalt-blue; base of each elytron with a large orange- 
coloured spot. Body beneath pale blue. Legs black, with grey 
pile. : ; 
2 
