4 Introduction 



They sent home very large collections from the Arfak Mountains, the 

 Schouten Islands and Waigeu. 



In 1916, Mr. Joicey acquired the collections of Lycaenidae and 

 Hesperiidae formed by Colonel Charles Swinhoe, and in 1917 there was 

 added the famous collection of South African Bhopalocera made by 

 Boland Trimen, which formed the basis of his work on the South 

 African Butterflies. 



In 1919, Mr. Joicey acquired the collection of Heliconius formed 

 by the late Herr Biffarth and most of the Lepidoptera collected by 

 Lieut. -Colonel Nurse in Aden, Baluchistan, and Somaliland. There 

 was also added the very fine collection of Lycae?iidae and Hesperiidae 

 formed by Mr. Hamilton H. Druce. 



The extensive collection of Lepidoptera, with the exception of the 

 Indo-Australian Moths and types of Palaearctic species, formed by 

 H. J. Elwes, Esq., was added in 1920. The same year saw the arrival 

 of many thousands of Lepidoptera obtained by Mr. T. A. Barns on an 

 expedition made through East Central Africa on behalf of Mr. Joicey. 



We must include some very large collections made by Mr. W. J. C. 

 Frost, who visited the Islands of Tenimber, Am, Key, Misol, Obi and 

 Sula, during 191(5—1918. From 1918—1920, Mr. C. Talbot Bowring 

 sent many thousands of specimens from the Island of Hainan, and 

 these were generously presented by him. 



During 1920 the brothers Pratt, working in Central Ceram on 

 behalf of Mr. Joicey, sent home a thoroughly representative collection 

 of the Lepidoptera met with in the high mountains of the island. 



The collection of Bhopalocera formed by Monsieur P. Dognin was 

 acquired early in the present year, and includes the types of species 

 described by him. 



Besides the material enumerated, much of a miscellaneous character 

 was added from time to time from all parts of the world. 



The collection of British Lepidoptera was also increased very 

 largely from 1912 to 1920. Many rare forms and aberrations were 

 purchased at the sales of certain celebrated collections, and many 

 additions to the local fauna were made by day and night collecting. 



Since 1915 the staff of the Museum has been increased to deal with 

 the work entailed by the enormous accessions, and it now numbers 

 seven persons. 



To house the increased collections, an annexe was added in 1920. 

 This was adapted from an Army hut over eighty feet long by twenty 

 feet wide, and serves the purpose very well, being insulated from damp 



