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Helcogaster gagatinus, Lea. 

 A female, from Melville Island, probably belongs to this 

 species, but has the front femora black with a pale vitta, 

 as on some males from New South Wales. 



Helcogaster ixsularis, Lea. 



A male, from the Dividing Range (Victoria), has the 

 projection between the basal sinuations of the head clothed 

 with rusty red hair, resembling a short fascicle ; on the types 

 the hair there is black, and so hardly conspicuous. 



Helcogaster pulchripes, Lea. 



A male, from Mount Lofty, differs from the type of this 

 species in having all the legs, except the tarsi and coxae, red- 

 dish, only the extreme tip of antennae infuscated, and the 

 prothorax with a conspicuous blackish spot on each side. 



Helcogaster tuberculifrons, Lea. 



On the male of this species the basal half of the head 

 is usually deeply infuscated ; on the females the inf uscation 

 of the head is more pronounced, the tubercle is reduced to a 



slight swelling on each side of the front of which is a shallow 



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impression, the antennae are thinner, and the front tarsi are 

 simple. Two females, from Dorxigo, sent with several typical 

 ones, are rather larger than the others, and have the head 

 deep black and highly polished, with only the lateral parts 

 of the muzzle pale; a similar female, from the Tweed River, 

 is in Mr. H. J. Carter's collection. 



Helcogaster tropicus, Lea. 



From some directions the wide median excavation on the 

 head of the male, of this species, seems to be bounded near 

 each eye by a subcorneal tubercle. The female differs from 

 the male in having the head almost entirely black, without 

 a large excavation, but shallowly bifoveate in front, the neck 

 less strongly narrowed, and the basal joint of the front tarsi 

 combl^ss. On both sexes the legs, except for the knees, are 

 usually entirely black. 



The typical specimens were labelled, in the Macleay 

 Museum, as from Cairns, but probably in error, as I have 

 seen no other specimens of the species from Queensland, and 

 it is abundant in the Mount Lofty Ranges, near Adelaide. 



Helcogaster niger, Lea. 



This species occurs in abundance in South Australia (Port 

 Lincoln, Tumby Bay, Kangaroo Island, Adelaide, Mount 



