THE BULLETIN OF THE BRITISH MUSEUM 
(NATURAL HISTORY) instituted in 1949, 1s 
issued in five series corresponding to the Departments 
of the Museum, and an Historical series. 
Parts will appear at irregular intervals as they become 
veady. 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 19 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 22 February, 1973 Price £6.50 
