36 ARKIV FÖR ZOOLOGI. BAND 12. N:0 15. 



C. Head neither ochreous nor dark-chestnut coloured. 



1. Snout strikingly long, broad and stout (of the type as shovvn 

 by SiLVESTRT in Fauna Siidwest-Australiens, Bd II, Lief. 17, 

 Isoptera, Taf. XXI, Fig. 213). 



E. occasus SiLV. Imago with 15-, 

 worker with 14-jointed antennas. 

 Distribution: S. W. Australia. 



2. Snout not strikingly long, broad or stout. 



a. Only one kind of soldiers. 



*. Head bright ferrugineous ; very short. 



E. hastilis Feogg. Imago and 

 worker with 15-jointed antennse. 

 Distribution: Queensland. 

 **. Head reddish-orange, head small, mouth long and narrow. 



1. 3rd joint of antennas districtly longer than 2nd. 



f. 3rd joint of antenn se longer than 4th, 



E. apiocephalus Silv. Worker 

 with 14-jointed antennae. 

 Distribution: W. Australia, 

 Queensland. 

 (Plate 2, Fig. 8.) 



' ' ff. 3rd joint of antennae shorter than 4th. 



E. tumuli Frogg. Imago with 16-, 

 worker with 15-jointed antennae. 

 Distribution: W. C Australia. 

 (See SiLVESTRi, 1. c, Tab. XXI, Fig. 201-202.) 



2. 3rd joint of antennas of about the same length as 2nd, head 

 more rounded on the sides and not tapering so much to 

 the base of the mouth. 



E. Aagaardi Mjöb. Worker with 

 14-jointed antennce. 

 Distribution: S- W. Australia. 

 (Text Fig. 27.) 



b. More than one kind of soldiers. 



*. Soldiers differing only in size and not in shape of the 

 head. 



E. eucalypti Mjöb. Worker with 

 15-jointed antennae. 

 Distribution: N. W. Australia. 

 (Text Fig. 26 b, c.) 

 **. Soldiers differing in both size and shape of the head ; 

 smaller soldier with head strongly constricted across the 

 middle. 



E. Pulleinei Mjöb. Smaller soldier 

 with 12-jointed,larger with 13-jointed, 

 worker with 14-jointed antennae. 

 Distribution: Queensland. 

 (Plate 2, Fig. 10, Text Figs 21 a, 26 a, 28.) 



