Species of Histeridse. 463 



Baconia loricata, n. sp. 



Ovata, depressa, nigra, nitida, supra caerulea ; fronte punctata stria 

 circulari ; pronoto lateribus parce et tenue punctato, ante medium 

 impresso, stria marginali integra ; elytris apice punctatis, striis 

 tenuibus, 1-4 integris, caeteris nullis ; mesosterno stria antice intor- 

 rupta ; propygidio parce punctato, pygidio sat dense punctato 

 utrinque subimpresso ; tibiis anticis tridentatis et cseteris uui- 

 spinosulis. L. 6 mill., lat. 4^. 



The surface-sculpture of this fine species in soma respects 

 agrees with Phelister violaceus, and both are from the same 

 country. Amongst the Hat Histeridee it is remarkable for its 

 great breadth. 



Hab. Blumenau, Brazil. 



Baconia patula, n. sp. 



Ovata, depressa, nigro-picea, nitidissima ; fronte tenuissime punctu- 

 lata, stria antice interrupta ; pronoto punctis in lateribus aliquot 

 sparsis, augulis antice runs ; elytris apice sparse punctatis, striis 

 1-2 integris, 3 dimidiata ; propygidio pygidioque punctatis; 

 mesosterno stria antice integra ; tibiis postice non-denticulatis. 

 L. 3 mill., lat. 2. 



This species, when compared with loricata, has several 

 characters that are observed also between Macrosternus Mar- 

 seuli&\\<\. Lafertei when compared together. The blue colour 

 is lost in both the smaller species and the surface- sculpture is 

 less obvious. In Baconia the great dilatation of the thorax 

 is owing to the widening out of the thoracic margin, and not 

 to the extensive growth of the presternum, as in Macro- 

 sternus ; but the plate of the mesosternum is much wider in 

 Baconia than in Marseul's genus. The widest part of this 

 insect and the last is just below the humeral angle. 



Hab. Blumenau, Brazil. 



Hister mundissimus, Walker, 1859= sccevola, Er. 1834. 

 This I have determined by the examination of the type in the 

 national collection. Walker begins his description of his 

 species by comparing it to sccevola and chinensis. 



Blister luciscus, n. sp. 



Ovatus, subconvexus, niger, subnitidus ; fronte stria antice recta ; 

 pronoto stria interna integra ; elytris striis 1-3 dorsalibus iategris, 

 4 brevissima punctiformi, suturali arcnata abbreviata ; propj-gidio 

 pygidioque punctulatis. L. mill. 



Hab. Birmah (ex coll. Monchicourt), 



32* 



