l62 



of the large pin through the cardboard disk, and 

 then firmly press the point into the cork of a 

 specimen tube, so that when the tube is corked 

 the mosquito is inside (Fig. 41). 



In damp climates, it may be necessary to 

 carefully dry the tube and insect in a dessicator 

 (over sulphuric acid or lime), or by placing in the 

 sun or warm place to prevent mould. This, how- 

 ever, is but seldom required. Mites are rarely 

 seen in insects preserved in tubes as described. 



Write any information, e.g., locality, date or 

 reference number upon the outer surface of the cork 

 and on the edge of the cardboard disc. For trans- 

 mission, all that is necessary is to pack the tubes 

 in wool in a box and send by post. Packed in 

 this way they are far more secure than when 

 mounted in the ordinary way in an entomological 

 box. Mosquitoes for the British Museum should 

 be addressed : — 



The Director 



The British Museum 



(Natural History) 

 Cromwell Road, London, S.W. 



Endeavour always to send both male and 

 female, at least two of each, and, what is of the 

 greatest possible importance for the advance of 

 our knowledge of mosquito classification, the 

 careful description of ova and larvae. 



Note. — If from any cause it is impossible to pin and 

 mount mosquitoes in this way they may instead be simply 

 placed between layers of tissue paper in a pill box, etc. This 

 is 'far better than placing them in any fluid such as spirit, by 

 which treatment they are rendered useless for identification. 



