A(isfr(di(tii <nt(l T<(s)i)irni<in Golcopfera. 215 



Dbrmbstiuae. 



Mr. Gondie has seen numerous larvae belonging to this 

 family in ants' nests, but so far has not taken the adult beetles. 



Trogoderma sor/um. Lea. 



Originally referred to Aiithrenus, but, as suspected by Mr. 

 Blackburn, really belongs to Troyodenna. Numerous larvae 

 were seen in several nests of a small black ant,l but only one 

 adult beetle was obtained. 



Btrrhidae. 



Microchaetes, sp. 



Mr. Goudie and Mr. Davey each sent a single specimen of this 

 genus as from a nest of Iridomyrmer iiitidus ; but they are too 

 badly abraded to be identified with certainty. 



SCARABAEIUAE. 



A species of this family, apparently close to Maechidius, is 

 represented in my collection by a single specimen that was taken 

 in the nest of a white ant at Swan River. Mr. Blackburn 

 returned it as unknown to him, and as probably not a 

 Maechidivs. Unfortunately its antennae are badly damaged, 

 80 it is not now described. 



Maechidius. 



Specimens of this genus may frequently be found under bark 

 of Eucalypti close to masses of small black ants, and the ants 

 will often run over them. But as such ants often swarm under 

 such bark and run over many other species of beetles that are 

 certainly not ants'-nest species, probably not much importance 

 can be attached to this. But the appendages of the head are 

 certainly very curiously modified (and protected) in comparison 

 with other Melolonthides. 



1 Ppecimeiis of ants mounted w ith the type are badly injured, but evidently belong to 

 the grenus Iridomi/rinex. 



