BY GERALD F. HILL. 451 



ing veins very indistinct and irregularly branched; 2nd vein with a few setae 

 along its entire length, remaining veins and membrane without setae or sculp- 

 ture. 



Legs moderately short and slender, femora a little thickened, with scattered 

 reddish setae. Tibial spines 3: 3: 2, long and slender. 



Abdomen short, broad, rounded at the apex, apical half of tergites and 

 sternites with very scanty setae, pleurites densely setaceous. Cerei short and 

 stout. Styli present in male only. 

 Measurements : 



Length with wings 11.0-11.5; witliout wings 7.0. 



Head, from base to base of clypeus, long 1.03; at and including eyes, 



wide 1.41; deep 0.80. 

 Antennae (20-jointed) 2.50. 

 Pronotum, long 0.75; wide 1.18. 



Wings: forewing-s, long 9.00, wide 2.85; hindwings. long 8.75, wide 3.00. 

 Tibia iii. 1.05. 

 Abdomen, wide 1.64. 



Soldier (Large form). (Figs. 45-48.) 



Colour: Yellow ochre above, antennae, legs and under surface slightly paler, 

 clypeus hazel, mandibles ferrugineous. 



Head (Fig. 45) large, quadrate, broadly rounded behind, sides widening a 

 little to the posterior margin of the antennal fossae, then drawing in to the 

 base of the mandibles, with scanty, stout, reddish setae. Labrum large, about 

 twice as long as clypeus, covering apical teeth of mandibles, slightly swollen on 

 the sides, deeply emarginate in front. Clypeus large, divided medially by a 

 deep furrow which passes forward from the fontanelle to the apex of the labrum. 

 Fontanelle large. Mandibles very stout with two apical teeth on the left, one 

 on the right. Antennae (Fig. 48) 17- or 18-jointed, 3rd joint shortest but very 

 little shorter than 4th and 5th, 5th to 17th moniliform, 18th small, broadly oval. 

 Pronotum (Fig. 46) wider than head, flat, with margin bent up, convex in 

 front, sides sloping to the concave posterior margin, clothed with scanty short, 

 stout, red setae. Meso- and metanotum wider than pronotum and similarly 

 clothed. 



Legs (Fig. 47) rather slender. Tibial spines 3: 2: 2. 



Abdomen broad and flattened, widest in the middle, broad at base, bluntly 

 rounded at the apex, segments with scanty setae. Cerci large, broad at base, 

 conical at apex. Styli present. 

 Measurements : 

 Total length 5.5. 



Thorax and abdomen, long 3.10. 



Head, base to apex of labrum. long 2.20; wide 1.55; deep 0.89. 

 Antennae (17- or 18-jointed) 1.92. 

 Mandibles, long 1.03. 

 Pronotum, long 0.66; wide 1.18. 

 Tibia iii. 1.27. 

 Abdomen, wide 1.31. 



Soldier (Small form). (Figs. 49 and 50.) 



Colour: Yellow ochre, clypeus oehraceous tawny, mandibles light ferrugine- 

 ous. 



Head (Fig. 49) small, widest behind the antennal fossae, narrower poster- 

 iorly, broadly rounded behind, clothed as in large form. Labrum long and 



