ERIC MJÖBERG, ISOPTERA. 55 



thorax 0,2 1 mm, breadth of prothorax 0,48 mm, breadth of 

 abdomen 0.8 4 mm. 



Soldier (smaller). Same characters as the larger. 



Measurements: Length of body 1,27 mm, length of 

 head 0,8 2 mm, length of snout 0,4 8 mm, breadth of snout 

 at base 0,i7 mm, length of prothorax 0,2 3 mm, breadth of 

 prothorax 0,42 mm, breadth of abdomen 0,6 mm. 



Worker, Of the usual Eutermes type; head shining, 

 posterior half blotched with darker reddish-brown, contracted 

 in front before the antennse; 3rd joint of antennae very small, 

 shorter than the 2nd and the 4th distal joints more than 

 twice as long as broad, the 15th slightly shorter than the 14th. 



Measurements: Length of body 5 mm, length of head 

 1,56 mm, breadth of head 1,27 mm, length of prothorax 0,29 

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

 1,48 mm. 



I have found this very typical species under the bark of 

 gum trees in the Kimberley-District of N. W. Australia. It 

 does not seem to build a regular nest, but covers up its 

 galleries and ducts by means of a clayey substance. 



24. Euternies (Tumulitermes) Aagaardi n. sp. 



Soldier (Text Figs. 18d, 27). Head reddish-orange, small, 

 rounded behind and at the sides, the snout fairly short and 

 stout; antennae (Text Fig. 18 d), 13-jointed,^ darker coloured 

 than in E. tumuli Frogg. and E. apiocephalus Silv., basal joint 

 stout and slightly bent inwards. 2nd half so broad and half so 

 long as the 1st, with nearly parallel sides, 3rd of about the 

 same length as 2nd (in the two species mentioned the 

 3rd joint is distinctly longer than the 2nd), broadest at the tip, 

 4th considerably shorter, 5th of the same size as the 3nd, 

 6th to 12th shorter and not quite so broad as in the other 

 two species, not twice as long as broad, 13th rounded at tip, 

 elongate, prothorax raised to a ridge in front, with a whitish 

 median line : abdomen greatly constricted at base, rounded 

 at the sides. 



^ According to Froqgätt the soldier of E. tumuli Frogg. has only 

 12-jointed antennae, but specimens deterrained by Froggatt which I have 

 at my disposal show 13 distinct joints. 



