50 Mr. C. O. Waterliouse on new Buprestidge. 



and much more acuminate elytra, with the coloration of ^. 

 decorcda, but less bright, with the subbasal black band nar- 

 rower and interrupted. The femora are dentate and black- 

 ish below in both sexes, moderately thick in the female, 

 very thick in the male, and projecting in a marked manner 

 beyond the apex of the elytra. The pubescence on the sterna 

 and legs is dirty yellow, very delicate and less thick on the 

 tibial and tarsi ; the tibia? are very slender. The apical 

 segment of the abdomen as in ^. decorata. 



I think that my Sagridola jiavicolUs would be better 

 placed in the genus Arithribola, on account of its slender 

 antenna? ; but its thorax is more regularly convex and has no 

 central channel. 



Mastododera Jansoni, n. sp. 



M. nodicolU affinis et similis, nigra ; autennis, pedibus elytrisque 

 rufis, his basi aiigustissime infuscatis, thoracis angulis posticis 

 magis elevatis. 



Long. 11-13 lin. 



Very close to M. nodicollis, K^^^Sj of which I at first 

 mistook it for a variety. In colour it differs in having the 

 legs entirely red, and there is scarcely any trace of black at 

 the base of the elytra. The thorax has the discal swellings 

 scarcely visibly raised, whilst the swellings above the poste- 

 rior angles are much more elevated and more convex. This 

 difference is very marked when the insect is viewed from 

 behind. 



Hah. Madagascar, Fianarantsoa. 



VII. — Descriptions of new Buprestidge. 

 By Charles O. Waterhouse. 



Nascio carissima, n, sp. 



Elongata, angusta, viridis ; capite supra, thoracis vitta mediana lata, 

 cj^aneo-nigris; elytris apice baud spinosis, gutta bumeraU plagisque 

 duabus cyaneo-nigris, plagis gutta flava ornatis. 



Long. 2| lin. 



Head and thorax densely punctured. Thorax evenly con- 

 vex, slightly constricted behind the middle. Elytra punctate- 

 striate, the surface all finely coriaceous; the apex of each 

 elytron sliglitly rounded, and finely serrate on the outer side. 

 The suture is black ; and there is a round spot on each shoulder. 



