224 w - A - SANDS 



unarmed. Apical teeth of mandibles shorter, La/L], 0-60-0-64, Ra/Ri. 0-78-0-88. 

 Fore tibia slightly swollen, Ti/T w , 4-21-4-62 ..... Jossor (p. 226) 

 - Enteric valve with cushions produced through valve opening as flattened vanes, 

 surface scaly, each scale fringed with minute spicules and a few small spines; 

 membranous wall of valve between and beyond cushions carunculated, each lobe 

 fringed distally with minute spicules. Apical teeth of mandibles longer, L A /Li, 

 0-64-0-79, Ra/Ri, o-88-i-oo. Fore tibia scarcely swollen, Ti/T m , 5-08-5-31 



cavator (p. 224) 



Aderitotermes cavator sp. n. 



(Text-figs 6io, 611-614 & 619-624; PI. g, figs 6-9) 



Imago. Head capsule dark sepia-brown, darker above ocelli, dark areas sometimes extending 

 as streaks tapering towards fontanelle; fontanelle circular or very short oval, flat or slightly 

 depressed, smaller than ocellus, yellow-white to yellow-brown, conspicuous; medial spot 

 circular, flat, smaller than fontanelle, sepia-brown; postclypeus brown, labrum yellow-brown; 

 frontal marks flat brown crescents; antennae yellow-brown; pronotum sepia-brown, meso- and 

 metanota brown; femora pale yellow-brown, tibiae yellow, tarsi paler. Abdominal tergites 

 sepia-brown, dorsal stigmata paler, sternites brown, yellow in middle, ventral stigmata pale 

 brown; cerci pale yellow. 



Posterior margin of head capsule usually slightly undulating not quite evenly rounded, but 

 some specimens evenly rounded ; ocelli fairly large, separated from compound eyes by half own 

 least diameter or more; postclypeus weakly to moderately inflated, Pcl/W, 0-21-0-27, PcI/Ra. 

 1-82-2-45, posterior margin arched or evenly rounded, median suture present, sometimes weak. 

 Characters of mandibles and head pilosity given in generic diagnosis. Complex ratio of mandible 

 and notal measurements Li/M.N, 1-26-1-52. 



Measurements (nine specimens from five localities) in millimetres. 



Range Mean ± S.D. 



Head width across eyes (W) . 1-09-1-31 1-213 ± 0-072 

 Ocellus (O w xOi). . . 0-09-0-13 x 012-018 0098 ± 001 1 x 0137 ± 0019 



Ocellus to eye (O-E) . . 005-009 0070 ± 0-013 



Postclypeus length (Pel) . 0-25-0-33 0-293 ± 0-030 



Antennal article III . . 004-007 0050 ± o-on 



Antennal article IV . . 0-05-0-06 0058 ± 0-007 



Antennal article V . . 005-007 0060 i 0-008 



Left mandible, apical to first 



marginal (L A ) • • . 0-09-0-14 0-125 ± 0-014 



Left mandible, first to third 



marginal (L\) . . . 0-17-0-24 0200 ^ 0-019 



Left mandible, third marginal 



to molar (L m ) . . . 007-0-09 0081 i 0-006 



Right mandible, apical to first 



marginal (R A ) • • • 0-11-0-15 0-131 ± 0013 



Right mandible, first to second 



marginal (Ri) . . . 014-018 0150 ± 0016 

 Right mandible, second mar- 

 ginal to molar (R m ) • • 007-009 0-081 i 0-009 

 Mesonotum width (M) . . 0-35-0-42 0-386 ± 0-027 

 Metanotum width (N) . . 0-38-0-44 0-397 ± 0-023 



Worker. Head capsule yellow-white, pilosity pale yellow, very sparse. Postclypeus moder- 

 ately inflated, Pcl/W, 0-26-0-28, Pcl/Ri, 2-38-2-44. Apical teeth of mandibles rather long, 

 La/Li, 0-64-0-79, R A /Ri, o-88-i-oo. Fore tibia scarcely swollen, Ti/T w , 5-08-5-31. Enteric 



