ETHIOPIAN NASUTITERMITINAE 



'55 



eyes by about one-fifth own least diameter ; anterior margin of postclypeus straight, posterior 

 convex, evenly rounded ; antennae 13 segmented, II and V subequal, IV slightly shorter, 

 III shorter still and narrower. 



Other characteristics given in generic diagnosis. 

 Measurements (10 specimens from 1 locality) in millimetres. 



Range 



0-54-0-56 



0-23-0-24 



006 x 008-009 



o 006-0 01 3 



0-39-0-43 



0-29-0-31 



0-68-0-71 



4-40-4-60 



Mean 



o-55 

 024 

 006 X 008 

 o-on 

 041 

 031 

 070 

 448 



Head width across eyes 

 Greatest diameter of eye 

 Ocellus 



Ocellus to eye . 

 Width of pronotum 

 Length of pronotum 

 Length of hind tibia 

 Length of fore wing 



Morphotype $ imago, Nigeria : Eastern Region, 12m. from Aba on Ikot Ekpene 

 Road, 12. ix. 1957 (W. Wilkinson Coll. No. WW 830). In British Museum (Natural 

 History). 



Soldier. The additional material has slightly increased the range of variation in size. 

 Measurements (14 specimens from 4 localities) in millimetres. 



Range Mean 



Head length to tip of nose . 098-1 07 . . . . 102 



Head width . 

 Depth of head capsule 

 Width of pronotum 

 Length of pronotum 

 Length of hind tibia 

 Variation. In the soldier caste the 



0-37-0-41 .... 038 



0-28-0-29 .... 028 



0-24-0-32 .... 026 



009 



o-47-o-53 • 050 

 lack of any noticeable variation is significant, since the 

 species has been recorded over a range of nearly 1,500 miles. 



The relationships of this species are discussed under the generic heading. 



Material (additional to morphotype colony). Nigeria : Western Region, Ibadan, 

 Agodi, 10.xii.1g57 (W. A. Sands), one queen, B.M.(N.H.). 



Congo : Stanleyville, 26. v. 1948, i.vi.1948, paratype soldiers and workers, type 

 and other colonies, Leopoldville, 5.VL1948, paratype soldiers and workers (A. E. 

 Emerson) ; Stanleyville, 19.iii.1948, paratype soldier (N. A. Weber), A.M.N.H. 



Republic of Congo : 13km. W. of Brazzaville, 8^.1948, paratype soldiers and 

 workers (A. E. Emerson), A.M.N.H. and B.M.(N.H.). 



This species appears widely distributed throughout the Congo and lower Guinean 

 forest block, where it has been recorded from galleries within the mounds of other 

 species. It has not been found west of the Dahomey-Togoland gap in the Guinean 

 forests. 



POSTSUBULITERMES Emerson 



Poslsubulitermes Emerson, i960 : 10. Type-species by original designation, Postsubulitermes 

 parviconslrictus Emerson, i960. 



Imago. The morphotype queen is unique and the mandibles have not been dissected. The 

 worker mandibles are described below. Postclypeus moderately inflated, width twice length, 

 anterior margin sinuate, convex in middle. Fontanelle elongate, Y-shaped. Eyes not set out 



