9 6 



W. A. SANDS 



Measurements (eight specimens from five localities) in millimetres. 



Range Mean ± S.D. 



113-1-25 1-190 ± 0044 



0-08-1-10 x 0-12-0-15 0095 ±0006 x 0133 ±0-011 



Head width across eyes (W) 



Ocellus (O w x Oi) . 



Ocellus to eye (O-E) 



Postclypeus length (Pel) 



Antennal article III . 



Antennal article IV . 



Antennal article V . 



Left mandible, apical to 

 first marginal (L A ) 



Left mandible, first to third 

 marginal (Li) 



Left mandible, third mar- 

 ginal to molar (Lm) 



Right mandible, apical to 

 first marginal (Ra) 



Right mandible, first to 

 second marginal (Ri) 



Right mandible, second 

 marginal to molar (R m ) • 



Mesonotum width (M) 



Metanotum width (N) 



007-010 

 0-25-0-30 

 002-004 

 004-006 

 005-006 



0-08-0-09 



0-18-0-20 



009-0- 10 



0-09-0- 10 



014-015 



0086 ± 0009 

 0-277 ± 0-016 

 0031 ± 0006 

 0047 ± 0-005 

 0049 ± 0-003 



0-088 i 0002 



0189 ± 0006 



0-093 ± 0-007 



0093 ± 0003 



0-141 ± 0005 



0-09-0-10 0095 ± 0-006 



025-0-34 0300 ± 0031 



0-28-0-35 0-317 ± 0-029 



Worker. Head capsule yellow-white, pilosity pale yellow, sparse and inconspicuous. Post- 

 clypeus moderately inflated, Pcl/W, 0-29-0-30, Pcl/Ri, 2-31-2-56; apical teeth of mandibles 

 short, La/Li, 0-50-0-53, Ra/Ri, 0-75-0-76; subsidiary marginal tooth of left mandible just clear 

 of molar prominence in surface view, complex ratio LA/Li.L m , 9-87-10-00; apical and marginal 

 teeth of right mandible in line, RA/Ri-Rm, 11-89-12-78. Fore tibia scarcely inflated, Ti/T w , 

 4-33-4-73, third apical spur small but more than one-quarter other two, not vestigial. Mesenteric 

 junction with proctodeum slightly longer than diagonal, but well to right of malpighian knot; 

 enteric valve seating dorsolateral, almost dorsal, in unopened abdomen, prominently three- 

 lobed, third, inner lobe smaller than outer two, almost completely sessile on second pouch of 

 proctodeum ; membranous wall of valve beyond cushions with sparse minute spicules. 



Measurements (two specimens from two localities) in millimetres. 



Head width (W) 



Fore tibia width (T w ) 



Fore tibia length (Ti) 



Postclypeus length (Pel) . 



Left mandible, apical to first marginal 



(La) 



Left mandible, first to third marginal 



(Li) 



Left mandible, third marginal to 



molar (L m ) . 

 Right mandible 



ginal (R A ) . 

 Right mandible, 



ginal (R,) . 

 Right mandible 



molar (R m ) 



apical to first mar- 



first to second mar- 



second marginal to 



0-88-0-89 



014-015 



0-65-0-66 



026 



008-009 



0-15-0-16 



005 



0-08-0-09 



OIO-OII 



006 



A. empodius will not be confused with any Group I species because it is much 

 larger. Comparisons with Group II species have been made under the headings of 

 its members. In Group III the only species likely to be confused with it is A. brevior. 



