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to me by the shape and clothing of the third to the seventh 
joints of the antennse. 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 hella, n. sp. 
C. elongata, capite thoraceque chalybeis, azureo vittatis : elytris 
purpureis, sutura azurea, maculis duabus basalibus aurantiacis : 
corpora subtus azureo. Long. 5 lin. $ . 
Head steel-blue, forehead dusky, cheeks grey, a pale blue 
vitta extending from the middle of the front to the occiput. 
Antennse black. Thorax steel-blue, a narrow central vitta, and 
on each side a broad lateral one, pale blue. Elytra elongated, 
broader than the thorax, tapering to the apex, and broadly trun- 
cated j surface in the 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. 
I met with one example only of this most charming species, 
at S. Paulo on the Upper Amazons, where it was found sunning 
itself on a leaf on the banks of one of the brooks which run 
through the virgin forest. 
Genus Cobelura, Erichson. 
Erichsou, Conspectus Ins. Coleop. Peruana, p. 149. 
The founder of this genus likened it to Colobothea, mention- 
ing as the only characters which distinguish it the depressed 
body and tumid mesosternum. Cohelura, however, diflfers from 
all the genera of the group Colobotheinse in wanting the acute 
prominent shoulders and sharp lateral carinse of the elytra which 
are characteristic of the group. The genus is more nearly allied 
to Nyssodrys and Hylettus, difiering from both chiefiy in the 
elongate-elliptical shape of the body (which assimilates the spe- 
cies to the Colohothe( 2 )y unarmed sides of the thorax, tumid 
mesosternum, and small size of the lower lobe of the eyes. The 
only species described by Erichson is the C. lorigeraj inhabiting 
the forest region of Eastern Peru, which difiers greatly from the 
following in colours and markings. 
Cobelura prolixaj n. sp. 
C. elongata, subdepressa, postice paulo attenuata, olivaceo-grisea : 
thorace vitta lata mediana fusca,, nigro marginata : elytris maculis 
