THE BULLETIN OF THE BRITISH MUSEUM 



(natural history), instituted in 1949, is 

 issued in five series corresponding to the Departments 

 of the Museum, and an Historical series. 



Parts will appear at irregular intervals as they 

 become ready. Volumes will contain about three or 

 four hundred pages, and will not necessarily be 

 completed within one calendar year. 



In 1965 a separate supplementary series of longer 

 papers was instituted, numbered serially for each 

 Department. 



This paper is Supplement 21 of the Entomological 

 series. The abbreviated titles of periodicals cited 

 follow those of the World List of Scientific Periodicals. 



World List abbreviation 

 Bull. Br. Mus. nat. Hist. (Ent.) Suppl. 



Trustees of the British Museum (Natural History), 1973 



TRUSTEES OF 

 THE BRITISH MUSEUM (NATURAL HISTORY) 



Issued 7 December, 1973 Price £9.55 



