264 Mr. J. S. Baly on new Genera and Species of Hispidse. 



the middle^ sinuate just behind the anterior angles ; disk smooth, 

 impunctate, sides rugose-punctate. Elytra subparallcl, slightly 

 increasing in width towards the hinder angles ; posterior spine 

 keeled above. Four anterior tibiae armed just before their apex 

 within with a short tooth. 



I am indebted for a specimen of this beautiful species to the 

 liberality of Herr Dohrn, of Stettin. 



2. Third to sixth joints (inclusive) of antenna; intimately connected ; 

 their sutural lines distinct. 



AcantJiodes ni(/ripennis, n. sp. 



J. elongata, dorse subdcpressa, rufa, nitida ; capite, thoracis vitta 



utrinque elytrisque nigris. 

 Long. 4 lin. 



Hab. Cayenne. 



Elongate, shining red ; head, a short vitta on cither side of 

 the thorax, its extreme aj)ical margin, together with the elytra 

 shining black. Head slightly excavated on the forehead; vertex 

 shining, impunctatc; antcnnre with the articulations between 

 the third and the three following joints visible under a lens. 

 Thorax nearly one-third broader at the base than long; sides 

 rounded, narrowed in front, above subcylindrical, deeply ex- 

 cavated transversely near the base ; surface impressed here and 

 there with deep distinct punctures, a black stripe on cither side 

 closely punctured, subrugosc. Scutcllum impunctatc, shining 

 red. Elytra much broader than the thorax, sides parallel, their 

 outer edge armed with fine, distinct senaturcs, posterior angles 

 produced directly backwards into a stout acute spine; above 

 subconvex, slightly flattened along -the suture; each elytron 

 with three elevated costre, the outer one less raised than the 

 others, interstices impressed with a double row of deep regular 

 punctures, the third intei'stice from the suture irregularly punc- 

 tured along the posterior two-thirds of its course. Beneath 

 shining rufous ; apex of abdomen piceous. 



Unique in my own collection. 



3. Third to sixth joints of antennae distinctly separate. 

 Acanthodes tarsata, n. sp. 



A. elongata, dorso depressa, postice paullo ampliata, obscure nigro- 

 senea, nitida ; pedibus fulvis, tarsis antennisque nigris, his apice 

 acutis, articulis 2^° ad G*"'" distinctisi transversis, moniliformibus ; 

 thorace conico, profunde punctato ; elytris angulo postico in spi- 

 nam latam acutam, dorso concavam, lateraliter oblique productis ; 

 utroque tricostato, interspatiis profunde bifariam punctatis, inter- 



