220 MESSRS. T. BLACKBURN AND P. CAMERON ON THE 



fuscis, cseruleo-iridescentibus ; clypeo antice trun- 

 cato; abdominis segmento primo transverso, antice 

 verticali. 

 Long. (^ 7-9 millim. 



Rather brightly shining, the pubescence scarcely dis- 

 cernible. The head and thorax are rather strongly and 

 closely punctured (but gradually less closely backwards), 

 the metathorax is not very rugose. There is a red spot 

 (absent in some specimens) behind the base of the an- 

 tennae. The sides (broadly) and the apical margin (nar- 

 rowly) of the basal segment of the hind body are red, its 

 undersurface is red, more or less clouded with fuscous or 

 black ; the second segment is red, except an abbreviated 

 central line on the underside, and so much of the upper 

 surface that the red appears as a rounded patch on either 

 side, not extending to the base or apex; the remaining 

 segments are black. The apical joint of the antennae, in 

 the male, is testaceous. The basal segment of the hind 

 body is extremely strongly punctured, the punctures being 

 rather elongate; the punctuation of the remaining seg- 

 ments does not differ much from that in the preceding 

 two species. The legs are of an obscure colour, with 

 fuscous pubescence. 



This insect occurs on the higher mountains of Hawaii, 

 at elevations 5000-7000 feet above the sea. 



N.B. I regard as probably the female of this species 

 some individuals of that sex taken in the same locality, 

 which diflPer in being larger (long. lo-ii millim.), in 

 having the wings of a rich blue (rather than violet) colour, 

 and the upper surface of the basal segment of the hind 

 body more broadly red at the sides. 



