EAST INDIAN TERMI TES. 



567 



Length of anterior wing 

 Length of head 

 Widtli of head . . 

 Width of pronotum . . 

 Length of pronotum . . 



2 1,50 mm. 



2,19 mm. 



2,00 mm. 



1,50 mm. 



1,25 mm. 



Soldier (the larger form).— Head reddish brown ; abdomen 

 yellowish ; labrum, antennae, and legs dark yellow. Head and 

 abdominal tergites smooth. 



Head quadrangular, sides converging anteriorly ; fontanelle dis- 

 tinct, minute, situated in front of the centre of head ; basal portion 

 of clypeus short, posteriorly not separated from forehead ; labrum 

 tongue-shaped, with triangular hyaline tip ; mandibles stout, tip 

 slightly incurved ; antenna: 17-jointed, 3rd joint slightly longer than 

 2nd ; pronotum broad, anterior and posterior border distinctly indented 

 in the middle ; sides of mesonotum and metanotum rounded. 



Length of body 9,50 mm. 



Length of head with mandible 4,84 mm. 



Length of head without mandible 3,28 mm. 



Width of head 2,78-2,88 mm. 



Width of pronotum 2,47-2,56 mm. 



Length of pronotum 1,12-1,25 mm. 



Soldier (the smaller form). — Head reddish brown ; labrum, 

 antennae and legs somewhat paler ; mandibles reddish brown ; abdo- 

 men straw-colour. Head smooth ; abdominal tergites provided with 

 microscopically minute hairs, two or three posterior tergites with 

 longer hairs. 



Head rectangular, sides strongly converging anteriorly ; fontanelle 

 indistinct ; basal portion of clypeus short, not distinctly separated 

 from forehead ; labrum lancet-shaped, with pointed hyaline tip ; 

 mandibles sabre-shaped, tip strongly incurved; antennae 17-jointed, 

 2nd joint as long as 3rd, 4th joint slightly shorter than 3rd ; pronotum 

 semicircular, anterior and posterior borders weakly indented in the 



