72 W. A. SANDS 



termes oryctes sp. n. are all about the same size, and though many other differences 

 are used in keys and descriptions, the fontanelle is easily observed. It is not 

 however a character that can be used more widely since it only differs in degree of 

 development from some congeners mentioned above. Whether or not the worker 

 abdomen is dehiscent is uncertain in A. aganus. 



Holotype $ imago, paratype $ and <$ imagos and workers from type-colony, 

 Republic of South Africa: Natal, Mahlabatini, 6.xii.i959 (P. C. Joubert) in 

 National Collection of Isoptera, No. TM.6995, Pretoria. (Paratype $ and <$ imagos, 

 and workers from type-colony also in BMNH.) 



No biological information is available about the single known nest-series. 



Astalotermes hapalus sp. n. 



(Text-figs 105, 108, 109, 118, 119 & 132-137) 



Imago. Head capsule chestnut-brown, not darker above ocelli, fontanelle less than half as 

 long as ocellus, oval, flat or slightly raised, pale yellow-brown; medial spot nearly circular, 

 flat, same size as fontanelle, brown; postclypeus brown, labrum yellow-brown; frontal marks 

 distinct, crescent-shaped, slightly depressed, pale brown; antennae yellow-brown. Pronotum 

 brown, meso- and metanota brown, transverse dark sutures present in both, stronger in 

 metanotum; legs, femora brown, tibiae yellow-brown, tarsi yellow. Abdominal tergites brown, 

 dorsal stigmata pale brown, sternites pale brown, pale yellow in middle, ventral stigmata pale 

 brown; cerci pale yellow. 



Posterior margin of head capsule evenly rounded; ocelli rather small, separated from com- 

 pound eyes by more than own least diameter; postclypeus moderately inflated, Pcl/W, 0-29, 

 Pc1/Ra, 3-00-3-22, posterior margin evenly rounded, median suture distinct. Apical teeth 

 of mandibles short, La/Li, 0-52-0-56, Ra/Ri, 0-75-0-83; subsidiary marginal tooth of left 

 mandible separated from molar prominence by distinct notch in surface view, complex ratio, 

 La/Li. L m , 7-70-9-10; points of apical and marginal teeth of right mandible in line, anterior 

 edge of first marginal distinctly longer than that of second. Pilosity of head capsule brown, 

 uneven, no pelt. Meso- and metanota somewhat wider at constriction, M/W, 0-29-0-31. Fore 

 tibia with third apical spur distinct. 



Measurements (two specimens from one locality) in millimetres. 



Head width across eyes (W) . 0-98-1-01 

 Ocellus (O w x Oi) . . . 008-009 x 0-10-013 



Ocellus to eye (O-E) . . 0-07 



Postclypeus length (Pel) . . 0-28-0-29 



Antennal article III . . . 004-0-05 



Antennal article IV . . . 005-006 



Antennal article V . . . 006 

 Left mandible, apical to first 



marginal (La) • ■ • 0-08 

 Left mandible, first to third 



marginal (Li) . . . 0-15-0-16 

 Left mandible, third marginal to 



molar (Lm) . . . 006-007 

 Right mandible, apical to first 



marginal (Ra) • • • 0-09 

 Right mandible, first to second 



marginal (Ri) . . . 0-11-0-13 



