186 W. A. SANDS 



Anaorotermes echinocolon sp. n. 



(Text-figs 482-492; PI. 7, figs 1-3) 



Imago. Head capsule sepia-brown, darker above ocelli; fontanelle much smaller than 

 ocellus, flat or slightly depressed, broader than long, irregularly shaped, approximately tri- 

 angular, very pale brown; medial spot circular, about equal in size to fontanelle, slightly raised, 

 brown; postclypeus brown, labrum pale yellow-brown; frontal marks distinct, flat, semicircular, 

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

 tibiae yellow, tarsi paler. Abdominal tergites brown, dorsal stigmata paler, sternites laterally 

 yellow-brown, ventral stigmata and middle of sternites pale yellow; cerci yellow-white. 



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

 medium sized, separated from compound eyes by slightly less than own least diameter; post- 

 clypeus moderately inflated, Pcl/W, 0-26, posterior margin arched or slightly angular, not evenly 

 rounded, median suture distinct except anterior end. Pilosity of head capsule uneven, not 

 forming a pelt. Other characters given in generic diagnosis. 



Measurements (two specimens from one locality) in millimetres. 



Head width across eyes (W) 



111-113 



Ocellus (O w xOi) . 



009-010 x 0-12-013 



Ocellus to eye (O-E) 



008 



Postclypeus length (Pel) 



029 



Antennal article III . 



006 



Antennal article IV . 



006 



Antennal article V . 



006 



Left mandible, apical to first 





marginal (La) 



009 



Left mandible, first to third 





marginal (Lj) 



018-019 



Left mandible, third marginal 





to molar (L„i) 



007-008 



Right mandible, apical to first 





marginal (Ra) 



OIO 



Right mandible, first to second 





marginal (Ri) 



013-0-14 



Right mandible, second marginal 





to molar (R m ) 



008 



Mesonotum width (M) 



o-34-°-35 



Metanotum width (N) 



0-34-0-38 



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

 inflated, Pcl/W, 028. Membranous wall of enteric valve between and beyond cushions without 

 detectable spicules. Other characters given in generic diagnosis. 



Measurements (one specimen) in millimetres. 



Head width (W) o-88 



Fore tibia width (T w ) . . . .011 



Fore tibia length (Ti) .... o-66 



Postclypeus length (Pel) . . . 0-24 



Left mandible, apical to first marginal (La) 0-08 



Left mandible, first to third marginal (Li) . 0-15 

 Left mandible, third marginal to molar 



(U) 005 



Right mandible, apical to first marginal 



(Ra) 0-09 



