297 



elytra with extremely fine and partly geminate rows of punctures, 

 Ihe interstices with traces of longitudinal costse; pénis parallel, the 

 apex obliquely rounded, ending in a small point, the surface with 

 a shallow sulcus at each side, below deeply and longitudinally con- 

 cave. 



Only a few species of this very'difficult genus hâve been described 

 from Madagascar; the présent one, ofwhich four spécimens are 

 before me, by the cupreous colour of the thorax, the greenish-blue 

 elytra and their extremely minute and geminate punctuation difïers 

 so much from most species of the genus that there will not be much 

 difficulty in distinguishing this insect if the « habitat » is taken into 

 considération as well. 



The female does not differ much from the maie but the elytra are 

 slightly more distinctly sulcate. 



NISOTRA MADAGASCARIENSIS n. sp. 



Ovate, very convex, fulvous, the thorax minutely punctured, 

 with anterior and basai perpendicular grooves, elytra metallic 

 greenish, opaque, very flnely punctured and minutely granulatè. 



Length 5 mill. 



Head impunctate, the vertex convex, the frontal élévations 

 obsolète, clypeus broad, rugosely punctured, antennse not 

 extending to the middle of the elytra, entirely fulvous, the third 

 joint twice as long as the second one; thorax more than twice as 

 broad as long, fulvous, the basai margin broadly produced at the 

 middle, the latéral margins distinctly rounded, anterior angles 

 slightly produced outwards, anterior margin straight at the middle, 

 with a deep and long perpendicular groove at each side, a similar 

 but much shorter groove is placed below the anterior ones at the 

 base, the surface finely and rather closely punctured, scutellum 

 fulvous; elytra very convex, ovate, opaque, bluish-green, very 

 minutely punctured, the interstices very finely granulatè, their 

 epipleurse very broad, concave; under side and the legs fulvous; 

 prosternum proportionately broad. 



Hah. Diego Suarez(Gh. Alluaud); my collection. 



The broadly ovate shape, convex and opaque elytra of silky 

 appearance will easily separate this species from any of its 

 congeners. 



NISOTRA APIGICORNIS n. sp. 



Fulvous, the terminal three joints of the antennae, the breast and 

 abdomen, and the posterior femora, black, thorax impunctate, 



