70 NOTES ON AUSTRALIAN COLEOPTERA, 



Remarkable for the great amplitude of its elytra as compared 

 with the prothorax. The latter is Vjy measurement just barely 

 longer than wide, and is not at all wider than the head j its 

 lateral angles though very obtuse are extremely well marked, not 

 in the least rounded off. The elytra become gradually and 

 slightly wider hindward from the base to near the apex ; the 

 front margin of each elytron is gently and very widely rounded 

 forward, a character which will at once separate this species from 

 all its named allies, unless it be one or two in whose descriptions 

 the shape of this part is not mentioned, but they are very 

 different in respect of other characters. From H. emarginatus, 

 Chaud., the colour of the antennse will inter alia separate it, from 

 H. velutinus, Macl., the nearness of the widest part of the 

 prothorax to the front of that segment. The dark antennae and 

 palpi are a noticeable character. 



N. S. Wales ; near Sydney. 



HOMBTHES ROTUNDATUS, sp.nOV. 



Late ovalis ; niger, antennis palpis mandibulis pedibusque totis 

 testaceis ; prothorace quam longiori sat latiori, quam caput 

 multo latiori, fere hexagonali, latitudine majori paullo ante 

 medium posita ; elytris late rotundato-ovalibus, quam con- 

 junctim latioribus vix sesquilongioribus, sericeo-tesselatis^ 

 leviter striatis, ad basin modice sat anguste productis. 



[Long. 3f, lat. If lines (vix). 



Remarkable for the strongly rounded sides and great width of 

 its elytra, which are by measurement scarcely half again as long 

 as they are together wide, — at a glance they appear even wider, 

 or something near circular. Apart from this character the 

 entirely testaceous antennse (joints 5 and 6 scarcely infuscate), 

 palpi, mandibles and legs will, I think, separate this species from 

 all previously named in the genus. 



N. S. Wales ; Blue Mountains. 



