BY WALTER W. FROGGATT. 745 



This species is remarkable for the great size of the winged 

 form in comparison with the soldiers and workers. The soldiers 

 and workers also have much darker heads than any New South 

 "Wales species known to me. 



Mr. J. R. Chisholm, of Torrens Creek, N.Q., sent me a rough 

 sketch of the nest and a general account of the habits of this 

 species, which is common about his homestead at Coalbrook 

 Plains Station. 



EuTERMES Triodi.e, n.sp. 



(Plate XXXV., fig. 8.) 



Upper surface of the head, thorax, scapular, and the abdominal 

 plates castaneous ; the rest pale ochreous ; wings fuscous, the 

 nervures darker. Length to the tip of the wings 5 J lines; length 

 to the tip of the abdomen 2 J lines. 



Head perfectly round behind, as broad across the eyes as from 

 the base of the head to the front of the ciypeus, the forehead 

 sloping down, the whole thickh^ covered with fine hairs ; eyes 

 large, round, slightly projecting; ocelli large, irregularly oval, in 

 a line with the centre of the eyes; antennse composed of 15 short 

 rounded hairy joints ; 1st large, cylindrical ; 2nd shorter; 3i"d 

 shortest; 4th to 14th broadly turbinate; last one elongate-oval; 

 ciypeus large, deeply divided in the centre and forming two 

 prominent lobes sloping in on the sides and slightly truncated in 

 front; labrum narrow, rounded in front; jaws moderately large, 

 with a sharpl}^ curved tooth at the tip, deeply concave below, with 

 an angular tooth below and a square edge towards the base. Pro- 

 thorax broad, not as wide as the head, truncate in front, narrow 

 at the extremities and broadly I'ounded behind, saddle-shaped. 

 Legs moderately long ; thighs thick ; tibise long, slender ; last 

 tarsal joint long and slender; claws large and curved inwards. 

 Wings three times as long as broad, rounded at the extremity; 

 scapular shield small ; costal and subcostal nervures running 

 close together and meeting just at the tip ; the latter much 

 stouter than the former, the median nervure running through 

 the upper half of the wing unbranched, the submedian ner\ure 

 running very close to the median, with 11 to 12 oblique nervures, 



