42 W. A. SANDS 



- Meso- and metanota proportionately wider at constriction, M/W over 026, or if 



less, Li/M.N under 2-4. Compound eyes prominent in proportion to own dia- 

 meter, back of head more widely rounded. Mostly larger, W, 0-76-1-33, only 

 three species under 0-98 (only one entire range less) . . . . . n 



9 Apical teeth of mandibles longer, La/Li, 0-78-0-80, Ra/Ri, 1-09-1-18; larger, W, 

 1-03-1-10 (better separation from other half-couplet given by complex ratios 

 La-Ra/Li Lm. 1-45-1-60; Ri/R-A-Rm. H"5-i2-4, but also note size difference) 



ASAGAROTERMES (p. 187) 



- Apical teeth of mandibles shorter, La/Li, 0-42-0-79, Ra/Ri, 0-62-1-05; smaller, W, 



0-65-1-06, those with longer apical teeth, small, W less than 085 (complex ratios 

 LA.RA/Li.L m , 0-46-1-37; Ri/R A .Rm, 16-2-31-6 10 



10 Postclypeus weakly inflated, without well defined median suture or posterior 



margin, Pcl/W, 0-20-0-22; small, W, 0-74 . . . APAGOTERMES (p. 155) 



- Postclypeus usually more strongly inflated with median suture and distinct posterior 



margin, Pcl/W, 0-21-0-36; those species in which not so, larger, W over 085 



ASTALOTERMES (Group I) (p. 51) 

 ANENTEOTERMES (p. 192) 



11 Apical teeth of mandibles longer, La/Li, 0-68-1-04, complex ratio La/Li. L m> 11-59- 



16-29. Pilosity of head capsule dense, uneven, not forming a pelt. Fontanelle 

 inconspicuous in species or genera with shortest apical teeth . . . . 12 



- Apical teeth of mandibles mostly shorter, La/Li, 0-41-0-80 (only two spp. over 



o-68, not all specimens of one of these), complex ratio La/Li. L m , 4-54-11-11 

 (only one sp. over io-6o). In species with mandible characters overlapping 

 with first half-couplet, pilosity of head capsule rather sparse, fine and even, 

 forming a pelt with scattered emergent setae, and fontanelle large or pale and 

 conspicuous . . . . . . . . . . . .13 



12 Compound eyes relatively small, W/E, 4-5, head capsule nearly semi-circular behind 



them AMICOTERMES (p. 152) 



- Compound eyes normal sized, W/E, under 4-0, head capsule distinctly less than 



semi-circular behind them ACHOLOTERMES (p. 139) 



13 Fontanelle shape generally regularly oval to long oval 



ASTALOTERMES (Groups II & III) (p. 51) 



ALYSCOTERMES (p. 125) 



ASTRATOTERMES (p. 105) 



- Fontanelle circular or irregular, may be broader than long, outline sometimes 



indistinct ............. 14 



14 Pilosity of head capsule short and even, forming a pelt with longer emergent setae . 15 



- Pilosity of head uneven, not forming a pelt . . . . . . . 17 



15 Fontanelle circular, sharply defined, much paler in colour than head capsule and 



contrasting with it . . . . . . . . . .16 



- Fontanelle irregularly circular or short oval, not sharply defined, paler than head 



but not contrasting ATEUCHOTERMES (p. 158) 



16 Ocellus separated from compound eye by less than own least diameter, O w /0-E, 



1-14-2-05. Apical tooth of left mandible shorter, La/Li, 0-54-0-68 



ADERITOTERMES (p. 222) 



- Ocellus separated from compound eye by approximately own least diameter, 



O w /0-E, 0-96-1-07. Apical tooth of left mandible longer, La/Li, 0-68-0-78 



ASTRATOTERMES (p. 105) 



17 Fontanelle circular, pale, only slightly smaller than ocellus. Postclypeus with 



evenly rounded posterior margin .... ASTRA TO TERMES (p. 105) 



- Fontanelle irregular, nearly triangular, less than half size of ocellus. Postclypeus 



with posterior margin rounded in middle, straighter towards outer corners 



ANAORO TERMES (p. 184) 



