598 Mr. G. J. Arrow on the genus 



piceo-nigris, striato-punctatis, humeris fere acute angulatis, dein recte 

 attenuatis ; antennis quara corpore paulo brevioribus, articulo primo 

 longitudine ad tres sequentes fere sequale, secundo moniliforme ; tibiis 

 omnibus incurvatis, mediis post basin fere tuberculatis. Long. 9 mm. 



Hab. Tasmania, Hobart; Victoria, Western Port 

 Bay. 



This appears to be a fairly common insect, which has 

 inclined me to think that it may be that referred to by 

 Olliff under the name of australis, Erichs. I have seen 

 series of the species in the collections of Mm. Grouvelle 

 and Oberthur in addition to those in the British Museum, 

 which are all from Tasmania. 



H. bicolor is a species almost exactly intermediate 

 between H. militaris, Er., and H. lucia, Pascoe. The 

 antennae, however, are relatively shorter than in either, 

 and the deep red colour of the head and thorax is also 

 peculiar. The form and size are those of H. lucia and 

 the thorax is similar although rather narrower in front. 

 The shining elytra, angular at the shoulders, are as in 

 JET. militaris, but are uniformly black with the exception 

 of the extreme margins. The legs are red, and the 

 middle tibia? have a slight excrescence externally, in the 

 same position as in H. lucia, but scarcely so prominent. 



H. gracilicornis, sp. n. 



Nigro-fusca, opaca, modice depressa, prothorace longitudine ad 

 latitudinem vix aequali, lateribus arcuatis, valde spinosis (antice 

 prsesertim), postice fortiter contractis, disco non costato ; scutello 

 parvo ; elytris striato-punctatis, humeris angulatis, dein regulariter 

 attenuatis ; pedibus paulo pallidioribus, femoribus vix inflatis, tibiis 

 rectis, mediis ad basin minute tuberculatis ; antennis tenuibus, 

 longissimis, quam corpus multo longioribus, articulo tertio quam 

 secundo duplo longiore, quarto sequali. Long. 10 mm. 



Hdb. Malay Peninsula, Perak ; Sumatra, Si Rambe. 



This species belongs to the group of large forms com- 

 monly enveloped in a loose earthy covering, as is H. htcia, 

 Pascoe. It differs from that insect by its rather more 

 flattened form and fewer teeth at the sides of the pro- 

 thorax. The disc of the latter is flat without perceptible 

 elevations or punctures. The shoulders are more sharply 

 angular than those of H. lucia, and the sides of the elytra 

 are abruptly perpendicular, at least anteriorly. The third 



