86 Mr. J. S. Baly on some 



nearly directly outwards to beyond their middle, thence 

 very obtusely rounded and slightly converging to their 

 base ; upper surface very minutely punctured, slightly 

 excavated on either side, impressed in the medial line 

 with a very faint longitudinal groove. Elytra much 

 broader than the thorax, shoulders not produced, obliquely 

 rotundate-ampliate ; sides rotundate-angustate from the 

 shoulders to the apex, the latter conjointly acute ; upper 

 surface gibbose before the middle, the gibbosity obtuse, 

 slightly compressed on the sides, space in front of the 

 gibbosity covered with two or three large foveee, re- 

 mainder of the surface (base and apex of the dilated 

 border excepted) covered with slightly raised, irregular 

 reticulations ; those on the yellow patch (which, stretch- 

 ing along the outer margin of each elytron from the 

 shoulder to beyond the middle, extends inwards nearly 

 to the suture) coarser and more elevated than the rest ; 

 outer margin broadly dilated, the portion of its outer 

 edge covered by the yellow patch deeply punctured. 



This insect resembles in form M. textiUs ; its colour, 

 however, is entirely different, and the lateral margin of 

 the elytra is much broader and flatter. 



Batonota collaris. 



Subtriangvilaris, convexa, subtus nigra, nitida, supra 

 opaca, et pube brevi cinerea sparse adspersa ; anten- 

 narum basi pedibusque anticis intus, obscure flavis ; 

 thorace scutelloque obscure rufis, illo antice carinato ; 

 elytris obscure viridi-teneis, antice retusis, trans- 

 versim gibbosis, sat profunde punctatis, interstitiis 

 obsolete elevato-reticulatis ; margine laterali tenuiter 

 punctato ; humeris antrorsum paullo prominulis, apice 

 angulatis, obtusis, dorso carinatis. 



Long. 5^ lin. 



Kah. — Pebas, Upper Amazons. 



Similar in form to the ? of B. truncata, the shoulders 

 less produced laterally, more obtuse, their anterior mar- 

 gin more distinctly rounded. Elytra deeply punctured, 

 the raised reticulations ill-defined, enclosing small irre- 

 gular spaces. 



Batonota rvfo-ornata. 



Sub-triangularis, convexa, subtus nigra, nitida, supra 

 obscure nigro-a^nea, opaca, pubc brevissima cinerea 



