350 Mr. C. O. Waterhouse on new 



punctured ; the sides are gently arcuate, as wide at the apical 

 callosity as at the base, the apex very obtusely arcuate. The 

 line dividing the meso- and metasterna is gently arcuate, 

 with scarcely any trace of angulation. 



Scatonomus thalassinus, sp. n. 



Elongato-oblongus, convexus, paullo nitidus, obscure viridis ; capite 

 sat crebre evidenter punctato, margine antico paullo deplanato, 

 quadridentato, dentibus brevissirais sequalibus ; thorace crebre 

 sat fortiter punctato, linea mediana laevi : elytris distincte striatis, 

 subtiliter creberrime punctulatis, punctis majoribus distinctis 

 immixtis ; pygidio sat fortiter punctato ; corpore subtus femori- 

 busque nigro-viridescentibus. 



Loug. 6 1 lin. 



Hah. Brazil. 



This species is closely allied to S. tnsignis, Harold, but is 

 dark green. The anterior teeth of the epistome are very 

 short. The punctuation of the head and thorax is rather 

 strong. The elytra have the strise more impressed than in S. 

 insignis ; the punctuation is close and very fine, with stronger, 

 very distinct punctures interspersed. The pygidium is 

 strongly punctured, the punctures not generally very near 

 together. The metasternum is finely but distinctly punctured. 

 The abdomen has the margins of the basal segments rugose. 



Onthocharis brevipes, sp. n. 



Elongato-oblonga, nitida ; capite piceo-aeneo, vertice virescenti, sub- 

 tiliter punctulato, clypeo antice leviter emarginato, medio biden- 

 tato, dentibus brevibus ; thorace sat magno, piceo-aaneo, antice 

 angustato, subtiliter punctulato, lateribus medio fere rectis, 

 angulis posticis rotundatis prominulis, linea mediana brevi dis- 

 tincta; elytris piceo-cupreis, sat fortiter striatis, striis sat fortiter 

 punctatis, interstitiis leviter convexis, subtiliter evidenter sat 

 crebre punctulatis ; pygidio piceo, subtiliter punctulato ; corporo 

 subtus obscure piceo ; pedibus piceis, tibiis posticis brevibus latis, 

 tarsorum articulo basali longitudine duplo latiori, profunde emar- 

 ginato. 



Long. 3 lin. 



Hab. Amazons, Ega (H. W. Bates). 



This species is peculiar for the form of the thorax, which 

 is somewhat obliquely narrowed anteriorly, with the sides 

 nearly rectilinear at their middle. The elytra have the stria? 

 rather more deeply impressed than is usual, and the punctures 

 are larger and somewhat triangular. The posterior tibiae are 



