E T H I (J 1 ' I A X X . \ S I • T I T E R M I T I X . \ E 



149 



Measurements (4 specimens from 1 



locality) in millimetres. 







Range 



Mean 



Head length to tip of nose 



1 25-1 40 



131 



Head width . 



0-59-0-66 



062 



Depth of head capsule . 



0-33-0-4 1 



0-38 



Width of pronotum 



0-29-0-35 



032 



Length of pronotum 



011-0-14 



012 



Length of hind tibia 



61-074 



068 



E. bipartitus differs from its earliest congener E. convergens in the imago in having 

 the ocelli closer to the eyes, and the eyes more distinctly set out from the sides of the 

 head ; the postclypeus is more inflated. The soldier of E. bipartitus, whilst similar 

 in shape, appears to have fewer head setae. Differences from the new members of 

 the genus, E. abruptus, E. aquilinus, and E. undulans, are discussed under those 

 species. 



Material. Congo : Mukimbungu, 5 S., 14 E., 9.x. 1904, Coll. No. 1158 (K. E. 

 Lamari), syntype male imago and soldiers from type colony, E. bipartitus (Sjostedt) ; 

 same locality, 19.x. 1904, and 22.x. 1904, 2 vials (K. E. Laman), the first of these 

 containing further syntypes. All in A.M.N. H. 



This species is only known from the original material, but it appears possible that 

 it may be a savannah species south of the Congo forest, equivalent in its ecology to 

 E. aquilinus in the north. 



Eutermellus convergens Silvestri 

 (Text-figs. 405, 406, 422-424, 485 ; Map 30) 



Eutermellus convergens Silvestri, 1912 : 245. Type locality : Island oi- Fernando Poo, 



Basile. 

 liutermes [Eutermellus) convergens (Silvestri) Holmgren, 1912 : 64. 

 Eutermellus convergens Silvestri ; Sjostedt, 1926 : 358. [States convergens syn. of bipartitus 



(Sjostedt)]. 

 Eutermellus convergens Silvestri ; Snyder, 1949 : 344. [States convergens not. syn. of bipartitus 



(Sjostedt)]. 



Imago. Head capsule dark sepia brown, with paler markings on frons, postclypeus sepia 

 brown, labrum and antennae brown. Pronotum sepia brown, meso- and metanota brown, 

 other thoracic sclerites and legs yellow-brown to brown. Abdominal tergites sepia brown, 

 sternites brown. Wing membrane translucent very pale brown, venation brown. 



Posterior margin of head capsule behind eyes evenly rounded, less than semi-circular, turned 

 slightly outwards at eye rim ; fontanelle pale, slit-like and slightly bifurcate in front to Y- 

 shaped with lateral arms dilated or branching terminally ; eyes slightly set out from sides of 

 head, oval, moderately prominent in proportion to own diameter and large or medium-sized 

 relative to head width, W/E index 2-6-3-0 ; ocelli small, separated from eyes by three-quarters 

 own least diameter ; postclypeus moderately inflated, width 25 times length, anterior margin 

 slightly convex or sinuate, posterior convex rounded, somewhat indistinct ; antennae 15 

 segmented, II, IV and V subequal. III shorter. 



Pilosity of head uneven, and dense not forming a " pelt " or " mat ". Pronotum and 

 abdominal pilosity similar, longer setae towards margins of tergites. 



