ERIC MJÖBERG, ISOPTERA. 69 



III. Antennaj 14-jointed, jaws ver\^ short and stout with largo triangulär 



tooth 14. 



H. latidens Mjöb. 



Distribution: N.Queensland. 

 (Text Fig. 43 n, 44.) 



31. Hamitennes (Drepaiiotermes) peniiger Frogg. 



The soldiers of this very curious form seem to vary to 

 a very great extent. Some, if not most, of the specimens 

 from North Australia have the head much lighter coloured 

 (h*ght reddish brovvn), the hind head broader and more convex 

 than in the ordinary dark-headed type. The shape and size 

 of the head aJso seems to be subject to great variations. I 

 have examined a large material from various localities but 

 without being able to find any constant characters justifying 

 me in creating a new species for the light-headed ones from 

 Kimberley and Northern Queensland. Between the extreme 

 types these is a whole series of intermediate forms. Under 

 t hese circumstancas I have preferred not to give a special 

 name to the variety just mentioned. 



As the winged insect and the nest and habits of this 

 species as well of the allied species E. rubriceps Frogg. are 

 hitherto unknown, I append description. 



Imago (Plate l,Fig. 1, Text Figs. 35 b, 36a, b). Light red- 

 dish-brown, with long, light ferrugineous— reddish wings; eyes 

 black. 



Head vertical, rounded behind, flattened on the summit, 

 with a deep median streak-like impression in the front (»die 

 Fontanelle»); eyes comparatively small, rounded, very httle 

 projecting; ocelli oblique, whitish, situated a good bit away 

 from the innermargin of the eye, oval, about twice as long 

 as broad ; front deeply emarginate, providing space for the basal 

 part of clypeus, which is distinctly divided by a median 

 darker suture, slightly emarginate in front, hairy; apical 

 part of clypeus whitish, membranaceous, straight on the 

 sides, but tapering to the front margin, which is strongly 

 produced in the middle to an obtuse lobe; labrum narrow at 

 the base, much broader and rounded towards the tip; jaws 

 very broad and stout, triangulär, the inner margin dark 

 fuscous, the dentition very similar to that of the genus 

 Eiitermes, the left jaw with two sharp apical teeth, then a 



