( xlvi ) 



Mr. Sich inquired whether different species of Osmia 

 utilise different species of shells. Mr. Morice replied that 

 they did so to some extent, and Prof. Poulton instanced 

 0. bicolor, which chooses the shell of Helix neiii oralis. 



Two Species op Butterflies from Waziristan. — Mr. G. 

 Talbot exhibited on behalf of Mr. J. J. Joicey : — 



Synchloe lucilla, Butl., a pair taken by Major Peile, I. M.S., 

 at Miranshal, Tochi Valley, North Waziristan, India, in March 

 and April 1915. These were taken during operations against 

 the Zadran (Afghan) marauders. Major Peile says : "I 

 noticed lucilla common about the stone sangars vacated by 

 the enemy, and three days later managed to secure some 

 examples there. Most examples were a little worn — and 

 females very rare, only four captured — but some were in very 

 fine condition. They frequent almost barren hills covered 

 with rocks and stones, most difficult hunting-ground, and one 

 cannot go anywhere in these parts without an armed escort." 



Ypthima bolanica, Marshall, taken at the same place, being 

 a new district for this rare species. 



Mimetic Grouping of Insects. — Dr. C. J. Gahan read the 

 following letter which had been addressed to him as Keeper 

 of the Entomological Department of the British Museum, and 

 said it was very interesting not only in itself, but as a quite 

 independent account of a phenomenon which had been dis- 

 cussed more than once at meetings of the Society. This 

 phenomenon was first described by Dr. J. W. Gregory in his 

 book on " The Great Rift Valley," and formed the subject of 

 a paper by Mr. S. L. Hinde in the Transactions of the Society 

 for the year 1902. Although Mr. Hinde had never seen the 

 insects arranged definitely in the manner described by Dr. 

 Gregory, it was clear that they are to be seen so arranged, 

 though perhaps only very rarely. We had now the testimony 

 of Mr. Stokes, as well as that of Dr. Parsons in relation to a 

 West African species, in confirmation of the account given 

 by Dr. Gregory : — 



"Mar. 9, 1916. 

 " Dear Sir, 



" I have just received from my son, Capt. M. Stokes, 

 F.R.G.S., who is serving in East Africa, somewhere near 



