18 Mr. H. W. Bates on the Longicom Coleopiera 



lustre in certain lights. Body beneath ashy. Legs blackish, 

 ringed with ashy. 



S Terminal abdominal segment with both dorsal and ventral 



plates deeply notched. , i/. , j u 4-- 



§ Ovipositor projecting one line and a half beyond the tip» 



of the elytra; ventral plate deeply notched. 



A common insect on branches of fallen trees in the foregt, 



both on the Upper and Lower Amazons. 



Genus Callipero, nov. 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 shght protuberance behind the middle, but free from lateral 

 spines or tubercles. Elytra without lateral keels, clothed with 

 short setae. Sterna simple. Antennae moderately elongated; 

 third to seventh joints thickened (the seventh thicker than the 

 rest), and densely clothed on their under surface with short 

 setae, 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 joint of pos- 

 terior tarsi as long as the three following taken together. 



This genus differs from all the genera of Acanthocinitae known 

 to me by the shape and clothing of the third to the seventh 

 joints of the antennae. 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, n. sp. 



C. elongata, capita thoraceque chalybeis, azureo vittatis : elytris 

 purpureis, sutura azurea, raacuUs duabus basalibus aurantiacis : 

 corpore 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. 

 Antennae 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 ; 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. 



