382 



GERALD F. HILL. 



forward prolongation, two oblique impressions in front. Anteclypeus produced in 

 front ; postclypeus large, convex, rounded behind, truncate in front, with distinct 

 median suture. Antennae 15-jointed ; 1st twice as long as 2nd ; 3rd very short, 

 smallest of all ; 4th and 5th nearly equal to each other, larger than 3rd ; 6th larger 

 than 5th ; 7th-12th nearly equal ; 13th and 14th very little longer and more cylin- 

 drical than 12th ; 15th longest, tapered from before the middle to the pointed tip. 

 Very rarely the 5th and 6th joints on one side only are fused. 



Prothorax slightly bent up in front, antero-lateral margin slightly rounded, 

 sides narrowed to the emarginate posterior border, divided medially b}/ a suture, > 

 which is very distinct in the anterior half ; two clear impressions on each side behind 

 the anterior margin ; the whole surface moderatelj^ hairy. A distinct pale mark 

 on each side of the median line of the metanotum. 



Wings (fig. 17) with border ciliate excepting on proximal fifth of hind margin ; 

 venation very variable, often differing in both fore- and hind-wings of same insect ', 

 radius darker than costa, sometimes with short branches near apex of wing. In 

 the fore-wing the median branches from the radius within the wing-stump, in the hind- 

 wing the division is well beyond the suture ; the median runs nearer to the cubitus 

 than to the radius and gives off from three to eight branches to the anterior margin. 



Vn 



17. Hamiterntes perplexus, sp. n., wings 

 of imago. 



apex, or to the hind margin, the first branch generally arising about the distal third 

 or fourth of the wing, but sometimes about the middle of proximal third. In some 

 a short stout vein branches from the median at the proximal fifth and joins the radius 

 about its proximal fourth ; cubitus very irregular and seldom alike in the fore- or 

 hind-wings of the same individual. In the fore- wing there are generally from six 

 to eight simple branches, all of which often reach the posterior border before the 

 middle ; in the hind-wing there are from seven to eleven branches, some of which are 

 forked. Associated with individuals having a wing venation as described above 

 there are generally many with the venation described by Mjoberg (1920, p. 84) in 

 H. ohtusidcns, Mjob. 



Legs ochraceous tawny, short ; tibial spurs, 3:2:2. 



Abdomen with ten distinct dark-coloured tergites ; ventral surface much fighter. 

 Styli wanting in both sexes. 



Measurements: Length with wings, 12-13; length without wings, 7-8; head, 

 with mandibles, 1 -27 long ; thorax and abdomen, 6-25 long ; head, including eyes, 

 1-17 wide; mandibles, right, 0-72 long, 0-51 wide, left, 0-73 long, 0-41 wide; 

 antennae, 1-7-1 -8; prothorax, 0-61-0 -65 long, 1-1 -17 wide; tibia (i) 0-85-0-89, 

 (ii) 0-84, (iii) 1-17; abdomen, 1-9 wide. 



Neoteinic Queen. — Head and thorax ochraceous tawny to light orange-yellow ; 

 tergites of abdomen paler, rest of insect creamy. 



