EAST INDIAN TERMITES. 



555 



ward, somewhat inclined ; basal portion of clypeus short ; labrum 

 tongue-shaped, with hyaline, triangular tip, reaching beyond middle 

 of mandibles ; mandibles sabre-shaped, with incurved piercing tip ; 

 antennae 17-jointed, 3rd joint shorter than 2nd ; pronotum broad, 



anterior and posterior borders indented in the middle. 



Length of body 6,00 mm. 



Length of head with mandible 2,69 mm. 



Length of head without mandible 1,66 mm. 



Width of head 1,41 mm. 



Width of pronotum 1,06 mm. 



Length of pronotum 0,59 mm. 



Worker. — Head and abdomen whitish ; head stout ; antennae 16- 

 jointed, 2nd joint as long as 3rd ; anterior border of pronotum slight- 

 ly indented in the middle, posterior border rounded. 



Length of body 6,00 mm. 



Width of head 1,47 mm. 



Width of pronotum 0,91 mm. 



Habitat. — Dobo, Arue Island (Dutch New Guinea) ; collected by 

 Air. Kanehira on May 6, 191 3. 



Remarks. — This species is closely allied to Coptotcrmes citrvigna- 

 tJius Holmgren. However, a close comparison of the two species shows 

 several discrepancies. Thus, in C. dobonicus the soldier is provided with 

 much longer head and with antennae which are 17-jointed instead of 

 being 14 — 16-jointed. In the workers, the most notable difference lies 

 in the number of antennal joints, which in the present species number 

 16, the 2nd joint being as long as the 3rd, while in C. curvignathus 

 the antennae are 15-jointed, the 2nd joint being much longer than 

 the 3rd. 



2. Coptotermes travians (Haviland). 



Soldier. — Head yellow ; mandibles brown ; abdomen whitish. Head 

 sparingly pilose; abdominal tergites densely provided with subequal hairs. 



