ETHIOPIAN NASUTITERMITINAE 167 



posterior margin of the head capsule, the prominent eyes, the shape of the postclyp- 

 eus, the rounded pronotum, and the imago mandibles. The soldier of Tarditermes 

 is closely similar to Mimentermes except for the longer nose. The distinguishing 

 features of the imago are its striking colour pattern, reduced pilosity, and larger 

 size compared with Mimeutermes. Tarditermes thus appears to be a more specialized 

 genus, probably derived from an ancestor very close to Mimeutermes. 



Tarditermes contracolor Emerson 



(Text-figs. 448-450, 459, 460, 496-500 ; Map 31) 



Tarditermes contracolor Emerson, i960 : 18. Type locality : Congo, near Camp Putnam, 

 Epulu River. 



Material, Congo : 4km. N. of Camp Putnam, i° 24' N., 28 36' E., 19.V.1948, 

 and Camp Putnam, 17. v. 1948 (A. E. Emerson), holotype and paratype imagos, 

 paratype soldiers and workers, A.M.N.H. and B.M.(N.HL). 



ACKNOWLEDGEMENTS 



I owe sincere gratitude to a number of persons and institutions from whom I have 

 received generous assistance in carrying out this revision. 



Firstly I wish to thank Dr. A. E. Emerson, lately Professor at the University of 

 Chicago, for all he did during my visit to assist and encourage my studies, and 

 particularly for free access to his unique collections and card indices. Secondly, I 

 wish to thank Dr. W. G. H. Coaton, of the Plant Protection Research Institute, 

 Pretoria, for great generosity, as on previous occasions, in providing material of 

 South African species, including one new to science and named in his honour. 



I am also grateful to the following specialists and curators who have been kind 

 enough to send me type specimens or other material on loan from their respective 

 museums : Prof. Dr. H. Weidner, of Hamburg, Prof. Dr. L. Brundin and Dr. K. J. 

 Hedgrist, of Stockholm, Dr. E. M. Kruytzer, of Maastricht, Dr. F. Capra and 

 Dr. Delfa Guiglia, of Genoa, Dr. P. Basilewsky, of Tervuren, M. A. Descarpentries, of 

 Paris, and M. le Directeur, Institute Royal de Sciences Naturelles, Brussels. 



My thanks are also due to Dr. W. V. Harris, Officer-in-Charge, Termite Research 

 Unit, for help and advice throughout the progress of this revision. 



I further wish to express my gratitude to the Trustees of the Leverhulme Research 

 Awards Foundation, for the generous grant which made possible a study visit to the 

 University of Chicago in 1962. Finally, my thanks are due to the Trustees of the 

 British Museum (Natural History) for permission to examine types and other 

 material in the termite collection. 



