i 4 W. A. SANDS 



1 1 Posterior margin of head capsule narrowly rounded, width behind eyes distinctly less 



than length to front of postclypeus ; eyes not set out from sides of head. Smaller, 



W, o-8o ; pronotum, width, 070, length, 0-42 POSTSUBULITERMES (p. 155) 



- Posterior margin of head capsule broadly rounded, width behind eyes approximately 



equal to length to front of postclypeus ; eyes slightly to distinctly set out from 

 sides of head. Larger, W, 0-89 or over ; pronotum, width 0-78 or over, length 

 061 or over ............ 12 



12 Larger, W, 1-28-1-35 ; E, 0-41-0-42 ; pronotum, width 1-20-1-23, length o-68- 



075 ; T 3 , 1-45-1-56. Pilosity sparse, surface of head shining. Colour, head and 

 pronotum yellow TARDITERMES (p. 166) 



- Smaller, W, 0-89-1-12 ; E, 0-29-0-35 ; pronotum, width, 0-78-1-35 ; length, 



0-61-1-15 ; T 3 , 0-82-1-06. Pilosity dense, surface of head almost obscured. 

 Colour uniformly dark sepia brown .... MIME UTERMES (p. 158) 



Soldiers 



1 Head capsule more or less constricted or contracted behind antennae (Text-figs. 



1 19-156, 388-395, 414-430, 464-469) 



- Head capsule not constricted or contracted behind antennae (Text-figs. 24—99 



256-296, 338-378, 396-398, 470-478, 497-500) 



2 Antennae 14 segmented ........... 3 



- Antennae 11-13 segmented .......... 5 



3 Vestigial mandibles without points . . TRINER V1TERMES minor soldiers (p. 76) 



- Vestigial mandibles with distinct points ........ 4 



4 Nose slender, cylindrical. Smaller, T 3 , 1-23-1-73. Colour, yellow to orange 



LEPTOMYXOTERMES (p. 51) 



- Nose thick, conical, sharply tapered and slightly turned down at tip. Larger, T 3 , 



1-96-2-05. Colour dark brown .... GRALLA TO TERMES (p. 55) 



5 Head in side view raised behind constriction, above line of nose profile including 



basal hump if present ........... 6 



- Head in side view with undulating or convex profile, not raised behind constriction 



above line of nose ........... 7 



6 Vestigial mandibles without points. Vertex of head without prominent setae 



(sometimes a pair of minute setae present). Constriction of head weak 



TRINERVITERMES minor soldiers (p. 76) 



- Vestigial mandibles with small to distinct points. Vertex with single pair of 



bilaterally placed setae. Constriction of head strong (Text-figs. 130-156) 



FULLERITERMES and RHADINOTERMES (p. 55) 



7 Nose shorter than rest of head capsule, measuring from hind margin of antennal 



socket. Soldiers dimorphic .... MYCTEROTERMES (p. 75) 



- Nose longer than rest of head capsule, measuring from hind margin of antennal 



socket. Soldier monomorphic ......... 8 



8 Nose and anterior lobe of strongly constricted head capsule with numerous tubercle- 



like outgrowths of cuticle, also present on basal antennal segments 



VERRUCOSITERMES (p. 156) 



- Nose and head without such outgrowths ........ 9 



9 Labrum with anterior corners extended as short lobes, middle of anterior margin 



bowed outwards producing trilobed appearance. Legs with long prominent setae, 

 1 on each coxa, 3-6 on each femur and tibia, among shorter more typical setae. 

 Nose somewhat rugose EUTERMELLUS (p. 141) 



- Labrum with anterior margin rounded or at most sinuate. Legs without such setae, 



or, if one or two present then soldier of minute size, L, 0-98-1-07 ; T 3 , 0-47-0-53. 



Nose smooth ............ 10 



