96 



ARKIV FÖR ZOOLOGI. BAND 12. NIO 15. 



YTXI 



cylindrical at the tip; antennse 14-jointed, slender, 8rd joint 

 broadest in the middle, longer than 2nd, 4th shorter t han 

 3rd, 5th and 6th as long as 3rd, following gradually lengthe- 

 ning, 8th to lOth longest, more than twice as long as broad, 

 two apical ones long and slender, longer than 12th; prothorax 

 ridged, tapering strongly at the sides; abdomen very long, 

 narrow. 



Measurements: Length of body with jaws 6 mm, length 

 of head with jaws 3,7 mm, length of head without jaws 1,7 8 

 mm, breadth of head 1,06 mm, length of prothorax 0,3 7 mm, 

 breadth of prothorax 0,7 mm, breadth of abdomen 1,02 mm. 



Worker. Whitish, head light 

 yellow, whitish in front. 



Head rounded, broadest in front, 

 basal part of clypeus oval in shape, 

 dotted with numerous small darker 

 spöts, jaws with a similar denti- 

 tion as described in the worker of M, 

 Harrisi Mjöb.; antennse 14-jointed, 

 basal joints twice as long as the 2nd, 

 3rd and 4th very short, 5th short, much 

 broader than long, 6th and following 

 gradually longer, but only the apical 

 one twice as long as broad; prothorax 

 small, rounded at the sides; abdomen 

 long and narrow. 



Measurements: Length of body 

 4 mm, length of head 0,9 9 mm, breadth 

 of head 0,82 mm, breadth of abdomen 1,3 6 mm. 



Queen. Head and thorax light-brown, abdomen whitish 

 with 8 very narrow and short chitinous plates, 



Head comparatively very small, rounded behind and at 

 the sides, deeply emarginate in front; eyes coarsely faceted 

 but not very much projecting; ocelli large, crescent-shaped, 

 fontanelle in shape of a little narrow streak, broadest 

 behind, tapering forwards; basal part of clypeus divided by 

 a median, dark suture, truncate in front; labrum broad, 

 rounded in front; jaws with similar dentition as M. JJarrisi 

 Mjöb.; antennae fuscous, 3rd joint very short and not so 

 broad as surrounding joints, following gradually longer; pro- 

 thorax much broader than long, with a very faint median 



Text Fig. 46. Profile from 



above of soldier of 



M. Cheeli Mjöb. 



