362 The Philippine Journal of Science i9i6 



posterior tergites a series of long spiny hairs intermingled with 

 such along the posterior border. 



Head suborbicular, sides slightly constricted in front and 

 slightly converging anteriorly; rostrum slender, conical, its 

 dorsal surface making a weak curve with upper surface of head ; 

 antennae 12-jointed, 2d to 4th joints subequal in length; prono- 

 tum saddle-shaped, anterior border rounded; legs slender. 



Mm. 

 Length of body 4.00 



Length of head with rostrum 1.56 



Length of head without mandible 0.90 



Width of head 0.93 



Width of pronotum 0.46 



Worker. — Head pale yellow, dorsal sutures whitish; abdomen 

 and legs white. Head sparingly pilose ; abdominal tergites mod- 

 erately provided with minute hairs. 



Head round; basal portion of clypeus shorter than half the 

 width; antennas 14-jointed, 2d joint nearly twice as long as 3d, 

 4th joint ring-shaped; pronotum saddle-shaped, anterior border 

 entire. 



Length of body 

 Width of head 

 Width of pronotum 



3.50 

 0.96 

 0.46 



Habitat — Luzon, Laguna, Sarai, 

 me, 1915. 



near Paete {McGregor), 



Eutermes (Eutermes) gracilis sp. nov. Plate I, fig. 9 ; Plate II, figs. 

 4 and 5. 



Imago. — Unknown. 



Soldier. — Head and antennae dark yellow, rostrum reddish 

 brown; abdomen and legs straw-colored. Head very sparingly 

 pilose ; abdominal tergites provided with microscopically minute 

 hairs, small number of spiny hairs intermingled with such. 



Head round, with a slender conical rostrum, anterior surface 

 of the latter in the same plane of top of head; apical portion 

 of mandible pointed, rudimentary; antennae 12-jointed, 2d joint 

 as long as 3d, 4th joint much longer than 3d ; pronotum saddle- 

 shaped, anterior border bilobed. 



Mm. 



Length of body 3.00-3.50 



Length of head with rostrum 1.59 



Length of head without rostrum 0.84 



Width of head 0.93 



Width of pronotum 0.47 ' 



Worker. — Head yellow; abdomen milk-white; antennae and 



