ERIC MJÖBERG, ISOPTERA. 87 



III. Antennse 14-jointed. 



A. Head constricted across the middle. Body exceedingly liairy. 



E. Tyriei Mjöb. Worker with 15- 

 jointed antennas. 



Distribution: N. Queensland. 

 (Text Fig. 29.) 



B. Head not constricted cross över the middle. Body as a rule 

 normally hairy. 



1. Head almost quite black, with lighter median line. 



E. nigerrimus Mjöb. Imago with 

 16-, worker with 15-jointed antenns?. 

 Distribution: N. Queensland. 

 (Text Fig. 16.) 



2. Head not black, without lighter median line. 



a. Head very rounded on the sides very nearly circular. 



E. pyriformis Frogg. Imago with 

 16-, worker with 15-jointed antennse. 

 Distribution: Queensland. 

 (Text Fig. 23.) 



b. Head not circular, but tapering on the sides to the base 

 of the snout. 



*. 3rd and 4th joint of antennae coalescing. 



E. coalescens Mjöb. Worker with 



lo-jointed antennse. 



Distribution: S. W. Australia. 

 (Text Fig. 17 e.) 



**. 3rd and 4th joint of antennse not coalescing. 



j. Head light reddish brown ; joints of antenn a? not 

 very long and slender.. 



ai. 4th joint of antennas much longer than the 3rd. 

 E. kimberleyensis Mjöb. Worker 

 with 15-jointed antennse. 

 Distribution: N. W. Australia. 

 (Plate 2, Fig. 5, Text Fig. 21 b.) 

 32. 4th joint of antennse scarcely longer than 

 the 3rd. 



E. yarrabahensis Mjöb. Worker with 

 15-jointed antennse. 

 Distribution: N. Queensland. 

 (Text Figs 18 b, 25.) 

 tf. Head dark castaneous brown, joints of antenns? 

 very long and slender. 



ai. Body large-sized, with the snout at least 4 mm 

 long. 



E. magnus Frogg. Imago very 

 large, with 16-, worker with 15-jointed 

 antennse. 



Distribution: N. Queensland. 

 (Text Fig. 22.) 



