ERIC MJÖBERG, ISOPTERA. 93 



tapering to the base, 4th broad, rounded, 5th slightly smaller 

 than 4th, 6tli and following gradually longer and longer, 

 pear-sliaped, the three last ones twice as long as broad, 

 apical joint elongate, rounded at tip; all joints thickjy and 

 shortly hairy; prothorax small, slightly emarginate on each 

 side of the middleline and slightly excised in the middle with 

 a dark median line commencing at the front margin and con- 

 tinuing to about a fourth part of its length, partly running 

 through a yellovvish triangulär median marking, anterior 

 angles rounded, sides tapering strongly to the base, before 

 the middle of the hind margin there is another yellow mark- 

 ing, thickly hairy; meso- and metathorax partly brown; 

 wings light greyish, fairly short and rounded at tip, the two 

 anterior strong nervures joining at the beginning of the 

 rounded portion, the second one very thic~k and dark coloured; 

 mediana running straight and unbranched through the upper 

 part of the wing, cubitus richly developed, with about 10 

 oblique, mostly unforked nervures; legs short, thickly hairy; 

 abdomen with parallel sides, basal joint of cerci very stout 

 and broad. 



Measurements: Length of body with wings 12 mm, 

 length of body without wings 7, 15 mm, length of head 1,17 

 mm, breadth of head 1,06 mm, length of prothorax 0,63 mm, 

 breadth of prothorax 0,8 9 mm, length of före wing 9 mm, 

 breadth of forewing 2,5 mm, length of hindwing 8,5 mm, 

 breadth of hindwing 2,8 mm, breadth of abdomen 1,4 mm. 



Soldier (Plate 2, Fig. 2, Text Fig. 45 c). Whitish, head 

 reddish -orange, jaws black. 



Head longer than broad, nearly truncate at the hind 

 margin, rounded at the posterior angles, parallel on the sides, 

 frontal process very much turned-up, sharp, of the type as 

 illustrated by Pl. 2, Fig. 2, its upper margin more darkly lined, 

 continuing laterally and ending in er a small tubercle on 

 each side of the process; labrum whitish-yellow, sharply pro- 

 duced into sharp tips at the anterior angles; jaws with an 

 extra small obtuse tooth above the base, antennse 14-jointed, 

 light yellow, 3rd joint slightly longer than 2nd, 4th the 

 shortest, ISth more than twice as long as broad, 14th elon- 

 gate, still longer, rounded at tip; prothorax ridged in front, 

 slightly emarginate in the middle, rounded at the sides; 

 abdomen whitish, shortly hairy. 



