190 THE AUSTRALIAN NATURALIST. 
dark brown, almost black colour, with the outer edges of 
the thorax and appendages reddish. The other was a very 
light yellowish brown, as though it had only emerged 
from the pupa some little while before. Length, 244 mm. 
In one large nest of #. metallicum, beneath a stone, I 
captured Hetatommiphila opaca, and remaining to further 
examine the nest, I saw Chlamydopsis serricollis crawling 
slowly out of one of the tunnels. This was the first and 
only occasion on which I have seen two different species 
of Histeridae in the samé nest. 
Family COLYDIIDAE. Nepharis costata, King. —Was 
taken in numbers in the nests of Iridomyrmex rufoniger. 
Length, 3 mm. 
Kershawia rugiceps, Lea.—Taken in the nests of 
Iridomyrmex rufoniger, is a dull brown beetle, about 4 
mm. in length. Several specimens of this sp. were taken 
at St. Marys, in a nest of the same sp. of ant. 
Family BRENTHIDAE. Cordus hospes, Germ.—t 
have taken in the nests of the following sp. of ants:— 
Tridomyrmex gracilis, I. rufoniger, I. sp., Camponotus 
igriceps, C. claripes. The largest specimen of this shiny 
brown weevil measured 94 mm., the smallest 6 mm. 
Cordus sp—FKFour specimens of this beetle were taken 
in the nest of Camponotus claripes at Como. They were 
very variable in size, the largest measuring 12 mm., the 
sinallest 6 mm. 
Besides Coleoptera (Beetles), other orders of insects 
are found with the ants. 
The Collembola (Springtails)—Are very numerous in 
nests that are in damp situations. 
Lhysanura (Silverfish) —Are represented by a small 
yellowish species that is very agile. 
Orthoptera.—The only species noticed was a small 
wingless cricket, which is quite numerous at times. 
Hymenoptera (Wasps).—Three wingless species have 
been taken, two were found in the nests of Huwponera lutea. 
The other was in the nest of a small brown ant, probably, 
an [Iiidomyrmex. 
