BY THE REV. T. BLACKBURN. Ill 



Byrrhomorpha PONDEROSA, sp.nov. 



Prsecedenti valde affinis ; multo major ; prothorace quam longiori 

 (et i)ostice quam antice) fere duplo latiori, angulis posticis 

 subrectis (superne visis aciitis et fortiter extrorsum retror- 

 sumque directis) ; elytris minus fortiter sulcatis. 



[Long. 6, lat, 85 lines. 



W. Australia; Yilgarn ; sent by C. French, Esq. 



PSEUDOHETERONYX. 



Heteronyci affinis sed apterus ; elytra conglutinata ; metaster- 



num breve. 

 Huic generi Heteronyx haldiensis, Bl.ackb., tribuendus est. 



PsEUDOHETERONYX HELiEOIDES, Sp.nOV. 



Brevis ; fortiter convexus ; postice leviter dilatatus ; minus 

 nitidus ; supra fere glaber pilis erectis fulvis sparsissime 

 vestitus, subtus et in pedibus setis fulvis minus sparsim 

 vestitus ; piceo-niger, antennis palpisque rufis, illarum clava 

 testacea ; clypeo crebre, capite postice minus crebre, protho- 

 race sparsim, pygidio etiam magis sparsim, leviter sat crasse 

 punctulatis ; elytris substi'iatis et leviter foveato-rugulosis ; 

 clypeo antice sinuato-truncato, ante oculos extrorsum vix 

 perspicue producto ; prothorace quam longiori fere duplo 

 (postice quam antice baud multo minus) latiori, lateribus a 

 basi antrorsum arcuatim convergentibus, basi media sat 

 lobata, angulis anticis modice ]iroductis sat acutis, posticis 

 (superne visis) obtusis ; tibiis anticis extus obtuse 3-dentatis ; 

 labio a clypeo obtecto ; antennis 9-articulatis ; coxis posticis 

 quam metasternum (hoc brevi) vix brevioribus, quam seg- 

 mentum ventrale secundum parum longioribus ; unguiculis 

 appendiculatis. [Long. 5^, lat. 3^ lines. 



This species bears a remarkable resemblance to a Helceid {e.g., 

 Nyctozoihis) on a casual glance. The absence of wings is a rare 

 character among the Melolonthidce, and I do not know how it 

 escaped my notice when I was describing P. baldiensis ; which, 



