ERIC MJÖBERG, ISOPTERA. 27 



the right with three apical ones of about the same size 

 and shape; antennse defect, the joints rather thick and 

 rounded, light rufous at the base, uncoloured at the tip; 

 ocelli rounded in front, flattened at the posterior margin; 

 eyes rounded, black, not very prominent; prothorax much 

 broaderthan long, emarginate at the anterior margin, rounded 

 at the anterior angles, tapering on the sides to the base ; 

 scapular shield of forewings large, triangulär, sending out five 

 strong free nervures into the membrane, fuscous; thighs 

 incrassated, hind tibise long and slender, all tibiae armed 

 with three beautifully serrated spines; abdomen with dark- 

 fuscous chitinous plates, bordered with fine hairs, with an 

 impressed median line in the interstices between the plates, 

 tip rounded. 



Measurements: Length of body without wings 11 mm, 

 length of head (to tip of labrum) 1,6 2 mm, breadth of head 

 1,24 mm, length of prothorax 0,68 mm, breadth of prothorax 

 1,14 mm, breadth of abdomen 1,6 mm. 



Soldier (Text Fig. 11 a). General colour darker than in 

 C. trilineatus Mjöb., body larger and raore strongly built. 



Head much longer than broad (see measurements), cylind- 

 rical, with parallel sides, posterior angles rounded, anterior 

 ones more obtuse, slightly prominent, darkbrown-fuscous on 

 the two posterior third parts, lighter rufous in front, here 

 impressed and sloping forwards, with three lighter, parallel 

 lines on the summit; apical part of clypeus well marked, its 

 sides not so much rounded as in C. trilineatus Mjöb., but 

 slightly sloping towards the front margin, the anterior angles 

 obtuse, not so much rounded off as in C. trilineatus Mjöb.; 

 labrum (the part thereof not covered by clypeus) much nar- 

 rower, much broader than long, completely rounded towards 

 the tip and here armed with long and stiff hairs, jaws (Text 

 Fig. 11 a) stout and robust, fuscous at the base, black at the 

 tips, crossing över each other, the left with a double 

 tooth below the tip and a rounded one in the middle, the 

 right with two triangulär ones near the middle and a small 

 incision further down; antennae 14-jointed, basal joint stout 

 and robust, 2nd a little shorter and not so broad, 3rd very 

 short, much broader than long, 4th distinctly longer but 

 shorter than the 5th, 5th to 13th longer and slender, broader 

 at the tips, strongly hairy, apical joint more narrow, elon- 



