56 NEW SPECIES OF ARTICERUS, 



A specimen of the male has been deposited in the Australian 

 Museum, and another in the collection of W. MacLeay, Esq. 



The correspondence between this species and A. Braziliensis, 

 as described and figured by Westwood, (Loc. cit.) is certainly 

 very close. Yet the specific differences are quite sufficient to 

 leave no doubt on my mind that our insect is quite distinct from 

 the American. A. regius has neither the foveoles on the thorax 

 nor the discoidal striae on the elytra, which mark the Braziliensis. 

 Westwood also describes the legs of the latter as gracHes, a term 

 which might apply to those of the female of regius, but by no 

 means to those of the male. In our species, the fore tibiae of the 

 male are deeply notched and toothed. The intermediate legs 

 have the tibiso toothed at the middle, and the femur is armed 

 with a strong spine. The female, which is much smaller, has all 

 the legs unarmed. 



The head is slightly enlarged between the antennae. The 

 antenna are nearly straight, cylindrical, and very slightly 

 enlarged towards either extremity. They are somewhat longer 

 than the head. 



Westwood says of A. Braziliensis that it is very distinct from 

 all the Australasian species in its sub-cylindrical antennae, and in 

 the form and sculpture of the head and thorax. This discovery 

 of our present species greatly qualifies this assertion, and adds 

 another to an already considerable list of forms existing in the 

 fauna of Australia closely allied to those of South America. 



Articerus breviceps. 



Brunneus setosus ; capite brevi postice rotundato, antennis 

 capite longioribus ad apicera clavatis truncatis ; thorace ad 

 medium valde depresso, ante medium latiori, postice subro- 

 tundato ; elytris stria suturali notatis. 

 Long. .10. 



Rope's Creek ; under debris after a flood. Mr. Masters. 

 The head is very short, increasing in breadth to the eyes ; the 

 breadth behind the eyes being nearly equal to the whole length. 

 The antcnnaj arc longer than the head, thin at the base, but 



