66 W. A. SANDS 



raised, coloured as head; postclypeus yellow-brown to sepia-brown, not darker than head 

 capsule, labrum pale yellow-brown to pale brown; frontal marks smooth, pale, flat, crescents, 

 yellow-brown to brown; antennae pale yellow-brown. Pronotum, meso- and metanota, yellow- 

 brown to brown, transverse dark sutures weak on meso- and metanota; legs, femora pale yellow- 

 brown to pale brown, tibiae paler, tarsi yellow-white to yellow. Abdominal tergites and lateral 

 parts of sternites brown, proximal three sternites paler in middle, dorsal stigmata sometimes 

 paler than tergites, ventral stigmata pale brown; cerci yellow-white. 



Posterior margin of head capsule not quite evenly rounded, slightly undulating; ocelli 

 medium-sized, separated from compound eyes by from two-fifths to two-thirds own least dia- 

 meter; postclypeus moderately to strongly inflated, Pcl/W, 0-27-0-36, Pc1/Ra, 2-83-3-43, 

 posterior margin evenly rounded, median suture distinct. Apical teeth of mandibles short 

 L A /Li, 0-52-0-64, R A /Ri, 0-71-0-88; subsidiary marginal tooth of left mandible clear of molar 

 prominence in surface view, La/Li. L m , 8-51-12-53; points of apical and marginal teeth of right 

 mandible approximately in line, anterior edges of marginal teeth equal or first slightly longer 

 than second. Pilosity of head capsule pale yellow to yellow, uneven, no pelt. Fore tibia with 

 well developed third apical spur. 



Measurements (eight specimens from six localities) in millimetres. 



Range Mean ± S.D. 



Head width across eyes (VV) 0-75-0-86 0-812 ± 0-039 

 Ocellus (O w X Oi) . . 0-06-0-08 x 0-08-0-10 0-066 ± 0-006 x 0-089 ± 0-005 



Ocellus to eye (O-E) . 0-03-004 0035 ± 0-004 



Postclypeus length (Pel) . 0-21-0-28 °'255 ± 0-026 



Antennal article III . . 002-0-04 0-030 -± 0-007 



Antennal article IV . . 0-04-0-05 0043 ± 0-003 



Antennal article V . . 0-04-0-05 0-044 i 0-005 



Left mandible, apical to first 



marginal (La) • • 007-0-09 0-079 ± 0-006 



Left mandible, first to third 



marginal (Li) . . 0-12-0-15 0-136 ± 0-009 

 Left mandible, third mar- 

 ginal to molar (L m ) . 005-0-06 °"°55 ± 0-005 

 Right mandible, apical to 



first marginal (Ra) • • 0-07-0-09 0-082 ± 0-006 



Right mandible, first to 



second marginal (Ri) . 0-09-0-12 0-104 ± o-on 

 Right mandible, second mar- 

 ginal to molar (R m ) • 005-006 °°55 ± 0-004 

 Mesonotum width (M) . 0-19-0-23 0-203 ± 0-015 

 Metanotum width (N) . 0-18-0-22 0201 ± 0-013 



Worker. Head capsule yellow-white, pilosity yellow, rather long but sparsely scattered. 

 Postclypeus moderately to strongly inflated, Pcl/W, 0-25-0-35, Pcl/Ri, 1-69-300. Apical 

 teeth of mandibles fairly short to rather longer, La/Li, 0-59-0-67, Ra/Ri, 0-72-0-92; subsidiary 

 marginal tooth of left mandible just clear of molar prominence in surface view, complex ratio 

 La/Lj. L m , 15-65-17-79; first marginal tooth of right mandible very slightly behind line of 

 apical to second marginal, anterior edge of first marginal approximately equal to that of second, 

 at most only very slightly shorter, Ra/Ri R m , 16-50-21-00. Fore tibia rather weakly inflated, 

 Ti/T w , 4-22-4-46, third apical spur prominent, only slightly less than other two. Mesenteric 

 junction with proctodeum diagonal, sinuate, to right of malpighian knot, distal end of mesenteron 

 slightly swollen; enteric valve seating lateral in unopened abdomen, clearly two-lobed with 

 sometimes a trace of third, inner lobe, connected to second pouch of proctodeum by distinct 

 neck, membranous wall of valve beyond cushions with sparse minute spicules. 



Measurements (three specimens from three localities) in millimetres. 



