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



tuse truncatis, angulo postico in spinam validam latam, dorso in- 

 crassatam, apice acutam, retrorsum paullo curvatam, lateraliter ex- 

 tensis ; utroque quadricostato, costa tertia minus distincta, medio 

 interrupta, apice abbreviata. 

 Long. 3i lin. 



Hab. Ega, Upper Amazons. 



Head smooth, finely granulosa, moderately produced between 

 the eyes ; antennse black, six basal joints smooth, nitidous, free 

 from longitudinal grooves, moderately robust, subincrassate, 

 basal joint slightly thickened, scarcely shorter than the second, 

 third equal to the second, fourth and fifth each rather shorter, 

 equal, sixth distinctly shorter than" the fifth, seventh as long 

 as the two preceding united, somewhat thickened, and, together 

 with the four apical joints, forming an opake elongated club, its 

 apex acute, and the sutural lines between the last four joints 

 obsolete. Thorax twice as broad as long, much narrowed in 

 front ; sides narrowly margined, obsoletely crenulate, rounded, 

 sinuate near the apex ; anterior angles slightly produced into a 

 subacute tooth ; above subcylindrical, slightly depressed trans- 

 versely near the base, basal lobe with a deep transverse groove ; 

 centre of disk faintly impressed with a narrow longitudinal 

 grooved line ; surface closely covered with large rounded punc- 

 tures; fulvous, the extreme lateral border and an interrupted 

 longitudinal line down the middle of the disk dark metallic 

 green. Scutcllum shining fulvous, the apical half of its surface 

 horizontal, concave, its apex obtusely rounded. Elytra broader 

 than the thorax, slightly increasing in width towards the poste- 

 rior angles, the latter produced almost directly outwards into a 

 broadly dilated acute spine, the apex of which is curved slightly 

 backwards, its upper surface longitudinally elevated ; sides 

 narrowly margined, finely and somewhat distantly serrated; 

 apical margin narrow, obtusely truncate, its edge serrate ; above 

 subdepressed, convex on the sides and apex; shoulders slightly 

 prominent, but not raised vertically, their apex subacute ; each 

 elytron with four elevated costse, the two outer ones less distinct 

 than the others, the second from the lateral border being inter- 

 rupted in the middle of its course; suture also raised; inter- 

 stices deeply bigemellate-punctate. Beneath bright fulvous; 

 anterior pair of thighs bidentate beneath, the hinder tooth long, 

 acute; four hinder thighs also armed with a long tooth, the 

 intermediate pair with a minute tubercle in front ; tibise curved, 

 the four anterior armed just within the apex with a short 

 tooth. 



Collection of Mr. Bates and my own. 



