^ Ixvi ) 



OF Pai'ilio dardanus, Brown, in late German East 

 Africa. — Prof. Poulton said that the following letter was 

 written by Mr. Lamborn from Tanga, on Aug. 10, 1917. It 

 was of great interest to receive the impressions of so keen an 

 observer upon the resemblances in life between mimic and 

 model and between the mimics themselves. 



" You will have already learnt that I obtained seven 

 eggs from a hippocoon female of dardanus, captured at Dar- 

 es-Salaam. The larvae did well and I have the seven pupae, 

 the images from which may now come out at any time. One 

 pupa is malformed, but not so badly that the perfect insect 

 is likely to be entirely valueless. I expect the females to be 

 all hippocoon, for I have as yet seen no other forms along 

 this coast, and Amauris niavius dominicanus, Trim., is more 

 abundant than I ever saw it on the West Coast, and far more 

 so than any of the other models. In anticipation of your 

 probable wish to study the latter with the eastern forms of 

 hippocoon I have secured a long series (56). These were taken 

 in association with another Amauris, ochlea, Boisd., I think, all 

 at one spot, mostly at rest on undergrowth beneath a Mango 

 tree, and within the space of an hour in the early morning. 



" Since I last wrote I have seen five more hippocoon females 

 and have taken three, the last this morning and now in cap- 

 tivity. I am still not sufficiently familiar with the East 

 Coast hippocoon and its model to be quite sure what the 

 species is when on the wing. In this connexion the follow- 

 ing incident occurred a day or two ago. I saw a hippocoon 

 feeding at a flower and hovering as these Papilios always 

 then do : Amauris, with the security probably born of its 

 protected qualities, always settles to feed. I missed the 

 Papilio and it flew off, with me in hot pursuit at midday 

 over some 200 yards of burning sandy plain, and it then 

 escaped over some bushes. But on the other side I saw it 

 again, as I thought, and pursuing it further took it, and 

 then discovered it to be a dominicanus. Returning to the 

 bushes I beat out the hippocoon, but again failed to secure 

 it, for it rose high into the air at once, as is usual when 

 alarmed. 



" I took recently my second Hyp>olimnas usanibara, Ward, 



