the Australian Longicornia. 529 



just described. In other respects it is a true Hcbecerus, and, 

 therefore, in a generic description of the antennae we should not 

 be able to get beyond a very vague generalization. 



Genus Exocentrus. 

 1. Exocentrus erineus. 



E. fuscus, nigro-setosus ; prothorace transverso, griseo-pubes- 

 cente, antice posticeque rufo-marginato ; elytris seriato- 

 punctatis, plagis duabus griseis j antennis pedibusque fuscis. 



Port Denison. 



Dark-brown, pubescent, everywiiere with long, black, setaceous 

 hairs ; head with an impressed line on the vertex ; eyes large, ap- 

 proximating above ; antennae dark brown, longer than the body, 

 very setose ; prothorax transverse, with a spine at the side a little 

 behind the middle, and directed backwards at a sharp angle, the 

 disc entire, covered with a sparse greyish pubescence, the anterior 

 and posterior margins dull red ; scutellum semilunar ; elytra mucli 

 broader than the base of the prothorax, seriate-punctate, the 

 punctures less regular towards the apex, a large greyish patch on 

 the middle, and another near the apex of each, but both indistinct ; 

 body beneath and legs brown, with a short greyish pubescence. 



Length 2^ lines. 



The genus Exocentrus is found in all parts of the world, but 

 this is the first time that it has been recorded from Australia. 

 The present species has more the outline of the European Exo- 

 centrus balteatus than of either of the two Aru Exocentri to which it 

 might be expected to be more nearly allied, but it is much darker, 

 and more setose. I have another species, apparently of this 

 genus, from King George's Sound, but in too bad a state to be 

 described. 



Genus Niphona. 

 1. Niphona miscella. 

 N. nigro-setosa, pube grisea fuscaque varia ; prothorace for- 



titer punctato, medio subcarinato ; scutello griseo. 

 Port Denison. 



Black, closely covered with a greyish pile, varied with brown 

 of two or three shades, with scattered black setaceous hairs inter- 

 mixed ; head greyish-brown, with a slightly impressed line on the 

 vertex ; antennae shorter than the body, slightly pilose, dark 

 brown, spotted with grey ; prothorax obscurely varied with dark 

 brown and grey, with a i>ivf coarse punctures, and a slightly 



