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



jaws 1,6 3 mm, breadth of head 1,22 mm, length of pro- 

 thorax 0,34 mm, breadth of prothorax 0,8 2 mm, breadth of 

 abdomen 1,4 6 mm. 



Worker. As in H. meridionalis Frogg., but much lighter, 

 whitish yellow. 



Measurements: Length of body 5,2 mm, length of 

 head l,4s mm, breadth of head 1,22 mm, length of prothorax 

 0,4 6 mm, breadth of prothorax 0,7 8 mm, breadth of abdomen 

 1,52 mm. 



This species lives in the Kimberley-District in North 

 West Australia. It does not seem to construct nests, but 

 lives in the large nests of Eutermes nigerrimus Mjöb. and 

 of other species. In opening a large nest of the former spe- 

 cies I found quite a number of winged insects (only one soldier) 

 streaming ont, taking to theirwings together with the imagines 

 of a very small Microcerotermes species. — Specimens from 

 Derby (under horse-dung) and Noonkanbah (160 miles from 

 the coast). 



35. Hamitermes herbertensis n. sp. 



Imago (Text Fig. 37 b, 39 a). Acharacteristic large-headed 

 species from the rainforests. 



Head slightly longer than in H. kimherleyeiisis Mjöb., 

 eyes longer and slightly more projecting, rounded behind, 

 dark fuscous-brown with niimerous yellow rounded small 

 spöts, ocelli of oval sharpe, oblique, situated in front of the 

 eyes; basal part of clypeus light brown, divided by a dark 

 median suture, rounded and tapering on the sides, truncate 

 in front; apical part whitish, produced in front; labrum large, 

 convex, rounded in front; jaws comparatively small, the left 

 one with two sharp apical teeth, the second one continuing 

 into a sharp ridge further down, basal portion angular, 

 obtuse, the right one with two very large and sharp angular 

 teeth and a very much smaller median one, basal part ob- 

 tuse; fontanelle very large, whitish, rounded and conti- 

 nuing forwards in two light, curved lines; antennae 15-jointed, 

 light fuscous, basal joint more than twice as long as the 2nd, 

 3rd only half so long as 2nd, 4th broader than 3rd, 4th to 

 6th rounded, about as broad as long, 7th to 15th about P/a 

 so long as broad; prothorax much broader than long, trun- 



