460 Mr. G. J. Arrow on new 



of the male are very long and slender, the tibiae serrated 

 along the basal two-thirds of their length and then sharply 

 tridentate. The hind femora have a siibangular dilatation 

 beyond the middle. 



Canthidium manni, sp. n. 



Nigrum vel cseruleo-nigrum, antennis tarsisqiie rufis. illoruru clava 

 pallida tiara, capita plerumqua Kueo, laevi, pronoto nitidissimo, 

 elytris subopacis ; corpus globosum, compacfcum, capita pro- 

 thoraceque Itevissirae puuetatis, illo antice acute bidentato, medio 

 minute 3-tuberculato ; pronoto valde convcxo, lateribus fortiter 

 arcuatis, ante medium obtuse angulatis, baseos lateribus minute 

 eeriato-punctatis ; elytris laevissime striatis, striis minute et 

 remote punctatis ; pygidio minute punctato. 



Long. 7-8 mm, ; lat. 4-5-5 mm. 



Hah. E. Brazil: Ceara, Natal. 



Although very easily distinguished by its smooth head and 

 the much more rounded sides of the thorax, this is very 

 similar in size, colour, and general appearance to C. hreve, 

 Germ., which also has three tubercles upon the head. Tlie 

 two clypeal teeth are more acute, the pronotum more smooth 

 and shining, and its sides distinctly angulated before the 

 middle. 



Onthopliagus onthochromus, sp, n. 



Pulvus, capite, prothoracis disco metasternique partibus obscure 

 asneis, elytrorum striis punctisque omnibus fuscis : elongato- 

 ovatus, subnitidus ; pronoto parcissime insequaliter punctato, 

 postica longitudinaliter sulcato ; elytris leviter striatis, striis vix 

 perspicue i)unctatis, interstitiis parce irregularitar punctatis ; 

 pygidio baud crebre rufo-ciliato : 



J , capite antica subtiliter crabre punctato, clypeo quadratim pro- 

 ducto, reflaxo, fronte polito, carinis nullis, pronoto antice late 

 excavate, Itevissimo, supra carinato, carina leviter 4-lobata: 



5 , clypeo crebre at rugose punctato, antice fortiter arcuato, carina 

 mediana arcuata, fronte vix punctato, carina recta, fortiter elevata 

 armato ; pronoto antice carinato, carina medio interrupta, 

 utrinque sinuata. 



Long. 12'o mm, ; lat. max, 7 mm. 



Hah. MattoGrossO: Madeira-Mamore Railroad, Camp 41. 



0. onthochromus is evidently nearly related to 0. nasutus^ 

 Guer., but it is much larger and differently coloured, the 

 coloration (and also the size) being almost the same as that 

 of the common Old- World species 0. gnzella, F., to which 

 tlie female bears a remarkable resemblance. It is an entirely 



