98 MR. F. P. PASOOE ON THE LON&ICOBNIA OP AUSTBATjIA. 



greater part of the genera of this subfamily by the form of the 

 prothorax. My Gallidiimi inscriptum belongs also to JSethelium. 



Oallidiopsis, long ago proposed to be separated from Phoracan- 

 tha, has been recently described by M. J. Thomson, who has also 

 adopted Callirhoe, though under another name ; and thus it be^ 

 comes necessary to examine what remains. Phoracantha as a 

 genus was never in a very satisfactory state. Mr. Newman cha- 

 racterized it in a most general way (it was difficult, indeed, to 

 do otherwise), but giving as a reason that " descriptionem fusio- 

 rem haud requirat genus percognitum." It included several series 

 of forms, each of which, taken as a group of species, could scarcely 

 be distinguished by characters without admitting certain excep- 

 tions, or by using others which further observations might prove 

 to be only of specific importance; and hence Phoracantha has 

 stood, like many other genera, a collection of many discrepant 

 species. With the materials I have before me, I have proposed 

 the following genera, which I think will be found to include only 

 obviously related species, and no others. They are taken in an 

 ascending scale, Phorocantha standing nearly in the middle. The 

 characters of Phoracantha, as here limited, are as follows : — 



Phoeacaktha. 



Caput pone oculos haud elongatum ; frons brevis, apice lata. Labrum 

 transversuni. Aiitennce elongatse ( $ multo breviores), articulis sub- 

 teretibus, 3'°-6"^™ apice spinosis. Frothorax\&t\xs, longitudine latitu- 

 dini fere aequali, lateribus spinosis. Elytra oblonga, apicibus bispi- 

 nosis. Femora in medio vix incrassata ; tibice anticae rectse. Corpus 

 plerumque robustum. 



The type is Phoracantha semiptmctata, Tab. {Stenochorus). 



Epithoea. 

 Caput pone oculos elongatum ; frons brevis, apice angustata. Labrum 

 parvum. Antennce corpore duplo longiores, articulis cylindricis, 3'°- 

 ^mum apice spina valida instructis. Prothorax oblongus, lateribus in- 

 sequalis. Elytra elongata, apicibus bispinosis. Femora in medio in- 

 crassata ; tibicB anticse curvatse. Corpus elongatum. 

 The type is Epithora dorsalis, MacLeay {Stenochorus). This 

 genus is peculiarly distinguished by the greater length of the 

 head, and the curved anterior tibiae. 



Mr. Newman has done little more than suggest the name of 

 GalUrhoe for the following, in the event of its being "raised to 

 generic honours." Mr. Hope includes it in. his genus Coptocercus. 



Callirhoe. 

 Frons siibbrevis, apice angustata. Labrum parvum. Antennce articulis 



