BY GERALD F. HILL. 265 



front of and close to eye, posterior margin oi' fossa elevated, seg:Dientation vari- 

 able but !;-euerally as follows: — 1st joint short autl stout, widest at apex, 

 more than twice as long us wide, twice as long as 2nd; 2nd short, (|iiadrate, as 

 wide as middle of 1st ; 3rd and 4th short, subequal, or 3rd shortest and narrowest 

 of all and 4th and 5th subequal. Eyes large, circular (0.352 diam.), facets small 

 (0.016 diam.), surrounded by whitish membrane, lower margin of eye very close 

 to lower mai-gin of head in profile (0.160). Ocelli oval (0.112 x 0.080), sepa- 

 rated from eyes by a little less than their short diameter. 



Prolhorax (Fig. 5) wider than long, slightly concave in front, rounded on 

 the sides, slightly bilobed behind, the entire outer margin slightly bent up, least 

 in front, surface sparsely setose, like head. Meso- and metathorax with a group 

 of setae in the median line about the anterior third, posterior margin of meso- 

 thorax as in prothorax, that of metathorax rounded, not at all bilobed. Wing- 

 stumps unequal, those of forewings nearly twice as long as those of hindwdngs. 



Legs (Fig. 6) rather slender, clothed sparsely with reddish hairs, first and 

 third tarsals subequal, much longer than second, fourth long and slender, femora 

 thickened, tibial spurs 3:2:2. 



Wings (Fig. 7) : Entire surface clothed uniformly and rather densely with 

 short setae; first two veins very distinct, dark brown at base, yellowish towards 

 apex, below the radius suffused with dark brown; radial .sector branching within 

 the wing-stump in the forewing, well beyond the suture in the hindwing, dark at 

 base but soon becoming indistinct, running nearer to the radius than to the 

 cubitus, with three or four indistinct inferior branches; median fused with the 

 cubitus (see Fig. 7) ; cubitus with seven or eight branches, the first four or five 

 dark, simple or branched once or twice, the others very indistinct, some branched, 

 all generally joining the hind border in the proximal two-thirds of the wing. 

 Apices of hindwings extending beyond those of forewings. 



Abdomen clothed as in prothorax. Cerci (Fig. 8) short and stout. Styli 

 short (0.064), wanting in female. 



Measurements : 



Length with wings: male 11.75—12.75; female 12.50—13.50. 



Leng-th without wings: male 6.25 — 7.00; female 7.00 — 7.50. 



Head: at and including eyes, wide 1.316 — 1.410; from posterior margin of 

 clypeus to base 1.128; deep 0.658. 



Mandibles: right, long 0.564, wide 0.517; left, long 0.635, wide 0.423. 



Prothorax: long 0.846—0.893; wide 1.363—1.457. 



Win.gs: forewing, lon.g 9.25, wide 2.960; hindwing, long 9.75, wide 3.196. 



Tibia iii., 1.363. 



Abdomen, wide 1.55 — 1.64. 



Soldier (Figs. 9—13.) 



Colour: Head deep chrome, palpi and antennae lighter, labrum darker, an- 

 terior margin of clypeus white, mandil)les black with proximal one-third much 

 lighter; thorax and abdomen dull yellow-ochre, with a whitish median stripe from 

 middle of prothorax to apex of abdomen, bordered on either side by an irregu- 

 lar brown pattern. 



H'ead (Figs. 9 and 10) widest across the middle, slightly rounded on the 

 sides, broadly rounded behind, with few reddish setae. Labrum acuminate. 

 Clypeus short, and wide. * Frontal opening large, its lower margin contiguous to 

 posterior margin of clypeus. Antennae (Fig. 11) 15- or 16-jointed, 3rd joint 

 smallest, sometimes markedly so, 4th and 5th sub-equal or nearly so. 



