OLIBKUS. 425 



b. Upper-side black or black-bronze. 



jT. Under-side brown-red or red-yellow; length 1 — 1^ 

 lines. 



1, Posterior angles of thorax somewhat blunted. 



A A, The two siitural striae much stronger than 

 the others. 



Oblong ovate, convex. Upper-side black ; under-side 

 brown-red ; antennae and legs reddish-yellow ; each elytron 

 usually with a distinct but badly defined red spot before 

 apex. Sutural striae on elytra distinct, the others extremely 

 fine and feeble, often effaced. L. 1-^- 1. Very rare. 



0. hicolor, Fab. 



JB 2?. The two sutural striae only rather stronger 

 than the others. 



Oblong-ovate. Upper-side black ; under-side, antennae 

 and legs red-yellow ; apex of elytra gradually lighter. Less 

 convex than 0. hicolor, more narrowed behind, the sutural 

 striae on elytra feebler, the others stronger. L. 1 1. Com- 

 mon. 0. liquidus, Er. 



2. Posterior angles of thorax sharp right angles. 



A A, Upper-side pitch-black. 



Ovate, convex. Upper-side pitch-black; imder-side, 

 antennae and legs red-yellow ; elytra lighter toward apex. 

 Outline less oblong than in 0. hicolor, striae on elytra 

 fainter. L. 1 1. (? Brit.) 0. af finis, Sturm. 



Ji a* Upper-side black-bronze. 

 Ovate, convex, very shiny, bare. Upper-side Ijlack- 

 bronze ; under-side, antennae and legs red-yellow. Elytra 

 with very fine, indistinctly punctured striae. Less oblong 

 and more metallic than 0. ciffinis. L. 1 1. Rare. 



0. iHirticeps, Muls. 



II. Under-side black or pitch-brown ; length \ — \ 

 line. 



1» Posterior angles of thorax right angles. 



Very short ovate, strongly convex. Black, antennae 

 lighter or darker yellow-brown, legs varying from reddish- 

 yellow to black. Elytra with feeble, very finely punctured 

 striae, two sutural striae rather stronger tlian the rest. L. 

 f — 4- 1. Not uncommon. 0. millcfolii, Payk. 



