35 



a casual inspection one would have no hesitation in placing 

 it near H. juhatus, Blackb., and its allies (which fall into 

 Group VIII., having the front outline of the head trilobed 

 and the claws appendiculate), but it has the head and claws 

 of Group III. 



Western Australia; Mount Barker (Mr. Lea). 

 II . femondis, sp. nov. Modice elongatus, postice parum dila- 

 tatus ; sat nitidus ; ferrugineus, antennarum flabello dilu- 

 tiori ; supra pilis brevissimis adpressis sparsim vestitus ; 

 clypeo brevi sat crebre ruguloso, antice late sinuato- 

 emarginato ; labro summo clypei planum haud attin- 

 genti ; f route fere ut clypeus rugulosa ; f ronte clypeoque 

 ut plana valde disparia visis (ilia antice subito perpen- 

 dicular!) ; antennis 9-articulatis ; prothorace quam 

 longiori ut 8 ad 5 latiori, antice sat fortiter angustato, 

 supra subfortiter minus crebre nee grosse punctulato 

 (puncturis circiter 15 in segmenti longitudine) , lateribus 

 pone medium sat dilatato-rotundatis, angulis anticis sub- 

 acutis minus productis posticis (superne visis) obtusis sat 

 bene determinatis, basi nonnihil bisinuata, margine 

 basali sat aequali ; elytris crebre minus fortiter punctu- 

 latis (trans elytron puncturis circiter 22), vix perspicue 

 substriatis ; pygidio sat crebre minus fortiter punctulato ; 

 coxis posticis . quam metasternum multo brevioribus, 

 qtiam segmentum ventrale 2"'" paullo longioribus ; 

 femoribus posticis haud dilatatis, inter series sparsius 

 sat fortiter punctulatis, postice ante apicem dente acuto 

 sat magno armatis ; tibiis anticis extus tridentatis : tar- 

 sorum posticorum articLilo basali 2" sat aequali, quam 3"^ 

 manifeste longiori; unguiculis bifidis. Long., 3f 1. ; lat. 



The hind femora bear a strong acute tooth of consider- 

 able size placed at about f of their length from the base. 

 I know no other Iletcronyx presenting such a character. 



Western Australia; Coolgardie. 



H . granum, Burm. The small South Australian Heter- 

 onyx which I believe to be this species is one of the most 

 difficult of the genus to place satisfactorily in association 

 with other species, on account of the very peculiar structure 

 of its labrum. The summit of that organ rises quite fully 

 to the level of the clypeus, and is visible when the head is 

 viewed obliquely from behind : but the sides (as viewed from 

 above) are not parallel, but converge hindward, so that the 

 labrum from that point of view narrows hindward and its 

 front angles are prominent. Hence from the point of view 

 from which most Heteronyces with a visible labrum present 

 a trilobed outline in this species, there is seen to be a tooth- 



