106 NOTES ON AUSTRALIAN COLEOPTERA, 



rounded hindward (the middle part a good deal produced hind- 

 ward, but hardly distinctly lobed). The interstices of the 

 punctures on the elytra are scarcely rngulose. The SGutellum 

 is moderate in size, and strongly transverse. 



W. Australia, Roebuck Bay ; sent by C. French, Esq. 



Hbteronyx merus, sp.nov. 

 Modice elongatus ; minus convexus ; postice vix dilatatus ; sat 

 nitidns ; ferruginous ; fere glaber, capillis fulvis sparsim 

 fimbriatus ; clypeo confertim crasse rugulose, capite postice 

 crasse minus crebre, prothorace sparsim acervatim minus 

 fortiter, elytris sat fortiter nee crebre sublineatim, pygidio 

 sparsim fortiter, punctulatis ; clypeo brevi lato ante oculos 

 extrorsum fortiter producto, antice obsolete angulatim late 

 emarginato ; prothorace quam longiori fere duplo latiori, 

 postice quam antice plus quam dimidio latiori, lateribus 

 leviter arcuatis, basi vix bisinuata, angulis anticis sat acutis 

 sat producfcis, posticis bene determinatis obtusis fere rectis ; 

 elytris hie illic obscure striatis, setis inconspicuis fulvis 

 sparsim ornatis ; tibiis anticis extus valde 3-dentatis : labro 

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

 lateia quam metasternum sat brevioribus quam segmentum 

 ventrale secundum sat longioribus ; unguiculis bifidis. 



[Long. 4|-5*, lat. 2|-3i lines. 

 I have not seen any other Heteronyx very close to this one, 

 which possesses several characters unusual in the genus, especially 

 the clusters of punctures thinly scattered over the prothorax and 

 the peculiar sculpture of the elytra consisting in fairly defined 

 rows of punctures (here and there appearing in a certain light to 

 run in striae for snort distances) separated by wide intervals on 

 which are here and there little groups of punctures similar to 

 those of the rows. 



N. Queensland ; sent by C. French, Esq. 



Heteronyx arcanus, sp.nov. 

 Modice elongatus ; sat convexus ; postice vix dilatatus ; sat 

 nitidus ; rufo-piceus, antennis palpisque testaceis ; capillis 



