ERIC MJOBERG, ISOPTERA. 33 



a dark spöt on each side before the antennae; labrum large, 

 broad and rounded, jaws dark rufous a t the inner mar- 

 gin, broad, the left with 6 rather sharp teeth, the right 

 with only two; the basal part finely serrated; antenns 13- 

 jointed, 2nd and 3rd joint of about the same length but 2nd 

 slightly broader, prothorax very small and narrow, emar- 

 ginate in the front, with scattered erect hairs, meso- and 

 metathorax much wider. 



Measurements: Length of body 4,3 mm, length of 

 head 1,06 mm, breadth of head 0,9 7 mm, length of prothorax 

 0,3G mm, breadth of prothorax 0,53 mm, breadth of abdomen 

 1,24 mm. 



The new Australian species differs from P. Buttel-reepeni 

 HoLMGR. amongst other things by having the tip of the jaws 

 more sharply bent and the anterior tooth of the left jaw 

 broad and leaf-like; from P. incequalis Hav. it differs distinctly 

 by the shape of the labrum, not being rectangular, but taper- 

 ing on the sides towards the rounded tip; from P. cequalis 

 Hav. it differs inter alia by the dentition of the jaws. 



This species is an inhabitant of the rain-forests. Speci- 

 mens (soldiers and workers) taken in rotten logs at Malanda 

 (July), Herberton (January) and Bellenden Ker (May). 



The discovery of a fourth new Australian species of this 

 well-defined genus is of great interest. It shows that the 

 Parrhinotermes species most likely are ancient forms, which 

 in earlier days had a wider distribution. Further investiga- 

 tions may show that the genus is also represented in New 

 Guinea. 



IV. Family Metatermitidae Holmgr. 

 Genus Eutermes (Heer) Hag. 



Of the x\ustralian termite genera this is undoubtedly the 

 most difficult. Nine distinct species have hitherto been 

 described by different authors, but further investigation 

 will doubtless increase the number of species considerably. 

 In the present material no less than eleven new species were 

 represented, bringing the number of Australian species up to 

 twenty. 



Since Froggatt (Australian Termitidse II, III, Proceed- 

 ings of the Linnean Soc. of W. S. Wales, 1876, 1891) de- 



Ärhiv för zoologi. Bd 12. N:o 15. 3 



