ERIC MJOBERG, ISOPTERA. 41 



joint the shortest (next to the 2nd), only half so long as the 

 ones in the middle, prothorax ridged in front, dark-fuscous 

 at the anterior margin, lighter coloured in its posterior half, 

 broader than meso- and meta thorax, which are light yellow 

 with lighter median line; legs whitish yellow, long and slender; 

 abdomen elongate, rounded at the sides, with yellowish 

 dorsal chitinous plates and scattered stiff erect hairs. 



Measurements: Length of body (to tip of snout) 5 mm, 

 length of head 2,13 mm, breadth of head 1,35 mm, length of 

 snout 0,87 mm, breadth of snout at base 0,5i mm, length of 

 prothorax 0,27 mm, breadth of prothorax 0,7 mm, breadth 

 of abdomen 1 mm. 



Worker. Whitish with very dark head. — Head broad 

 and rounded, on the upper surface blotched with dark reddish- 

 fuscous, divided by a median and a transversal broad white 

 line into two broad posterior and one transversal anterior 

 part, the latter with a hghter spöt on each side; basal part 

 of clypeus broader than the apical one, the latter truncate in 

 front, labrum large, broad and convex; jaws very large, the 

 left with two apical sharp teeth, a smaller one further 

 below and a protruding triangulär basal part, the right 

 with two very large and sharp apical teeth, a smaller, more 

 obtuse one directly below, and a large basal pointed part; 

 antennae whitish, 15-jointed, 3nd joint longer than 2nd, fol- 

 lowing ones not quite twice as long as broad, tapering on 

 the sides to- the base; prothorax ridged in front, rounded at 

 the sides, with a light fuscous, chitinous cross-band, abdomen 

 large, rounded. 



Measurements: Length of body 5,4 mm, length of 

 head 2, 13 mm, breadth of head 1,6 2 mm, length of prothorax ^ 

 0,38 mm, breadth of prothorax 0,93 mm, breadth of abdomen 

 1,7 mm. 



The soldier of this species has the darkest head of all 

 Australian Eutermes species. It differs from E. magnus Frogg. 

 (of which I have had specimens for examination determined 

 by Froggatt) by having the head much broader behind, a 

 longer snout, and much longer and more slender antennse, 

 with the 3rd jaint as long or slightly longer than the 4th, 



' To give precise measurements of the length and breadth of pi^othorax 

 18 very difficult Reservation must therefore be made for the accurate of 

 the measurements given. 



