BY WILLIAM MACLEAY, JUN., ESQ. 109 



thorax, wliicli in the South Australian species is truncated or abnost 

 emarginate in front, causing the anterior angles to appear to be 

 produced forwards. In this species, on the other hand, the 

 anterior angles are rather obtuse, and the thorax is slightly 

 rounded in front. The head and thorax ai*e black and glossy. 

 The former is transversely striolated, and the latter has the 

 medial line slight, but distinct, and the recurved lateral margins 

 finely punctured. The elytra are long, parallel at the sides, and 

 closely striated and punctured throughout. The mentum of this 

 species has the medial tooth very minute and bifid, in this it 

 agrees with H. lonijipennis of Grermar, and differs much from 

 the type of the genus, which is the H. costatus of Bonelli. 



Nov. Gen. ACROGENTS. 



Antennm submoniliformes, articulo primo crasso, secundo parvo, 



reliquis subsequalibus. 

 Labru7}i subquadratum. 

 Mandihidce valida? arcuatse vix dentatfe. 

 Maxillce arcuatfe acuta3. 

 Palpi Maxillares subcrassi, articulo penultimo brevi, ultimo 



ti'uncato. 

 Palpi Lahiales subelongati, articulo ultimo subtruncato. 

 Lahiuni membranaceum vel coriaceum ad basin angustius apice 



truncatum, paraglossis longis iutrorsum cur- 



vatis. 



Mentum lobis lateralibus acuminatis medio lobato. 

 Caput postice subangustum. 

 Thorax subcordatus angulis posticis prominuUs. 

 Corpus planum. 



G. ACROOENYS HIRSUTA. 



Nigra pilosa, capite thoraceque crebrissime punctatis, elytris 



punctulatis sulcatis sulcis punctatis puuctis setigeris. 

 Long. 5| lin., lat. If lin. 



This insect is of an uniform dull black, and is leather thickly 

 clothed with long flexible hairs. The head and thorax are thickly 

 covered -with close punctures ; the latter has the medial line 



