BY W. M4CLEAY, ESQ., F.L.S. 321 



The insect from the Clarence River, described below, has long 

 been known to me, and I have often felt surprised that it should 

 remain to the present time undescribed. I have repeatedly received 

 specimens from the Clarence, and have seen them in other collec- 

 tions, so that it can scarcely be looked upon as a rare insect. 



Genus Lachnodbkma. 



Mentum subtransversum profunde emarginatum, deute medio 

 magno valido obtuso lobis lateralibus longioribus apice sub- 

 acutis. 



Labium corneum subelongatum apice rotundatum. 



Palpi lobiales validi securiformes. 



Palpi maxillares validi oblique truncati. 



Maxillce apice arcuatae acutae. 



Lahrum quadratum antice ampliatum rotundatum. 



AntenncB sublongge filiformes articulo primo ceteris majori, se- 

 cundo breviori. 



Gap>ut postice angustatum oculis prominentibus. 



Tliorax cordiformis transversus angulis posticis acutis recurvis. 



'Elytra thorace latiora subplana truncata. 



Corpus alatum planum hirsutum. 



Pedes subvalidi tarsorum articulo quarto fortiter bilobato. 



Lachnodebma cinctdm. 



Long. 5 lin. 



Piceo-rufum subnitidum fortissime punctatum dense pilosum, 

 thorace capita latiori lateribus antice valde rotundatis, 

 elytris thorace latioribus coeruleo-cinctis, antennis pedibus- 

 que nigris. 



The place of this insect will be with the Helluonidce, a sub- 

 family numerously represented in Australia, and of a well defined 

 character. 



Count Casteluau has given a very good review of the whole 

 group in his " Notes on Australian Coleoptera." He divides 

 them into those with wiusrs and those without. 



