474 MK. J. S. BALT ON GENERA AND SPECIES 



impressed on the anterior disk, finer behind the middle ; inter- 

 spaces plane, very remotely impressed with minute punctures, 

 only seen under a lens. Body beneath shining nigro-piceous, the 

 claws pale piceous. Hinder thighs armed beneath with a minute 

 tooth. 



Family CHETSOMELIDiE. 

 Grenus Cyclonoda. 



Corpus late ovato-rotundatum, valde convexum, apterum. Caput 

 in thoracem iusertum ; oculis angustatis, elongatis, remotis ; an- 

 tennis corporis dimidio brevioribus, ad apicem \ix incrassatis ; 

 clypeo S profunde et oblique incisa, 5 semper transversim 

 truucato ; palporum maxillarium articulo ultimo ovato. Tliorax 

 transversus. Scutellum trigonatum. Elytra convexa, regula- 

 riter punctato-striata, lateribus ante medium modice lobatis, 

 limbo inflexo horizontali, piano. Pedes robusti ; unguiculis in- 

 ermibus. Prosternum canaliculatum, antice in processum obtu- 

 sum breviter productum ; acetaluUs anticis apertis. 



Type Cyclonoda piliola, Clark (Chalcomela) . 



The present genus is separated from Chalcomela by its apterous 

 body, closely united elytra, and by the distant, narrow, and 

 elongate eyes. The males are distinguished by the remarkable 

 forms of the clypeus : in C. pilula and suhpunctata of Clark (the 

 only species in which the male is known to me) the anterior border 

 of the clypeus is obliquely incised by a broad angular notch, 

 commencing close to the insertion of the right antenna, and 

 extending more than halfway across the segment ; the lower 

 margin of the notch is developed into an obtuse lobe, thickened 

 at the base, and produced obliquely forward, concealing (when 

 viewed from above) the greater portion of the labrum. 



Grenus Paralepta, 



Corpus elongatum, parallelum, convexum. Caput exsertum ; 

 oculis remotis, prominulis, elongato-ovalibus ; antennis filiformi- 

 bus, corporis dimidio sequalibus ; palpis maxillaribus articulo 

 ultimo trigonato, apice late truncato. TJwrax transversus, late- 

 ribus irregulariter crenulatis, Scutellum trigonatum. Elytra 

 thoraci gequilata, parallela, confuse striatim punctata. Pedes 

 mediocres ; unguiculis acute appendiculatis. Prosternum meso- 

 sterno sequilatum, apice vix ampliatum, dorse canaliculatum ; aceta- 



