ON SOME AUSTRALIAN TERMITES. 



391 



Measurements: Total length, 5-25; head, with mandibles, 1-5 long; head 

 1 • 12 wide ; antennae, 1 -41 ; thorax and abdomen, 3-76 long ; prothorax, 0-37 long, 

 0-84 wide ; tibia (i) 0-86, (ii) 0-7, (iii) 1 ; abdomen, 1 -8 wide. 



This species is most closely related to H. germanus, Hill, from the Northern 

 Territory (tig. 19) ; it differs, however, in its much larger size, larger and more 

 rounded labrum, and larger and differently shaped clypeus. In both species the 

 antennae are similarly segmented and the mandibles are alike except in size. 

 The two species are easily separated. 



Described from one soldier, and numerous nymphs and workers in alcohol, and 

 nine soldiers and nine workers on cards. 



Type series in South AustraHan Museum ; co-types in author's collection. 



South Australia: Mt. Lofty Ranges (A^. B. Tindale) ; Gawler (.-1. M.Lea); 

 Angaston (.4. M. Lea). 



Hamitermes eucalypti, sp. n. 



Imago. — Palpi and legs buckthorn-brown ; head, thorax, wings, abdominal 

 tergites mummy-brown, head darkest, antennae Dresden brown, darker towards 

 the tip. 



Head (fig. 23) rounded, slightly longer than wide, widest across the eyes, densely 

 clothed with moderately short hairs. Maxillary palpi with first and second joints 

 very short, together equal to the third ; third and fourth equal. Ej-es large, 

 rounded, projecting well beyond sides of head. Ocelli large oval, separated from the 

 inner margin of the eyes by a distance equal to their length. Fontanelle large, 

 broadly lanceolate, twice as long as wide. 



Fig. 23. Hamitermes 



eucalypti, sp. n., head 



of imago. 



Antennae 15- or 16-jointed, dark with clear articulations ; 1st joint twice as 

 long as 2nd and much wider ; 2nd cyhndrical and about as long as 3rd and 4th 

 together ; 3rd very short, narrower than 2nd and 4th, indistinctly separated from 

 the latter ; 5th and 6th equal in length and shorter than 7th and 8th ; 9th to 13th 

 longer than 7th and 8th and nearly equal to each other ; 14th slightly longer than 

 13th ; 15th and 16th a little longer than 14th ; 15th cylindrical. 



Prothorax sHghtly bent up in front, rounded on the sides to the truncate posterior 

 margin, a clear obhque oval area on each side of the median suture in the anterior 

 third, the whole surface moderately densely clothed with medium-sized hairs. Wing- 

 stumps small, triangular, clothed with numerous short and long hairs, suture straight ; 



