OF TERMITES FROM CALOLINE ISLANDS. 



199 



Soldier (the larger form). — Head blackish brown, tip of rostrum red- 

 dish brown ; abdominal tergites darker ; antennae and legs pale yellowish 

 brown. Head very sparsely pilose ; abdominal tergites provided with 

 microscopical hairs, posterior three segments with spiny hairs along the 

 posterior border. 



Head round, with 

 short conical rostrum, 

 its anterior surface 

 making a weak curve 

 with upper surface of 

 head ; antennae 13- 

 jointed, 3rd. joint about 

 twice as long as 4th. and 

 longer than 2nd.; prono- 



Fig. 4. Eutarmes brezirostris . 

 Soldier, a, shape of head. 6, lateral view. 



turn saddle -shaped, short, anterior border rounded ; legs slender, elongate. 



Length of body 4,00 mm. 



Length of head with rostrum 1,63-1,69 mm. 



Length of head without rostrum 1,03-1,09 mm. 



Width of head 1,09 mm. 



Width of pronotum 0,56-0,62 mm. 



Soldier (the smaller form). — Colour and hairiness as in the larger form. 

 Antennas 13-jointed, 2nd. joint as long as 4th., 3rd. joint much longer than 

 2nd. 



Length of body 3,00 mm. 



Length of head with rostrum 1,59-1,63 mm. 



Length of head without rostrum 1,03 mm. 



Width of head 1,03-1,09 mm. 



Width of pronotum 0,50-0,56 mm. 



Worker (the larger form). — Head dark brown, paler anteriorly ; 

 antennae, legs and abdomen yellowish brown. Head and abdominal tergites 

 densely provided with microscopical hairs ; on the posterior two or three 

 abdominal tergites long spiny hairs present in addition. 



