( iv ) 



Htpolimnas (Euralia) dubius, Beauv., a Mendelian 



dominant, and h. (e) anthedon, boisd., recessive. 



Prof. PouLTON exhibited part of an sdl-anthedon family 

 recently bred by Mr. Lamborn at Oni Camp seventy miles 

 east of Lagos, from an anthedon female parent, and part of 

 an aW-duhius family also bred from an anthedon female. 

 Both families were amply large enough to preclude the 

 possibility of accident. The facts indicate that in the first 

 family a recessive female had paired with a recessive male, in 

 the second that a recessive female had paired with a dominant 

 male. There can be little doubt that the pattern of anthedon 

 conforms more closely to that of the genus than the pattern 

 of dubhcs and that the dominant form is therefore the more 

 recent development. 



Butterflies a Natural Food of Monkeys. — Prof. 

 PouLTON read the following note received in a letter from 

 Mr. W. A. Lamborn, November 17, 1911 : — 



" Our District Commissioner, Captain Neal, who occasion- 

 ally spends a few days with us [at Oni Camp] tells me 

 that he has several times seen ' dog-faced monkeys,' (not 

 baboons but probably mangabeys), squatting beside mudholes, 

 such as butterflies of some kinds resort to in large numbers 

 in the dry season, and catching them one after the other and 

 eating them. ]t occurred to me that this evidence might be 

 valuable as showing that butterflies may be a natural food 

 of monkeys." 



The urticating hairs of a Lasiocampid larva disseminated 

 THROUGH THE AIR. — Prof . PouLTON exhibited specimens of the 

 Lasiocampid moth Mimo2)acha gerstaeckeri, Dewitz, bred from 

 the caterpillars referred to by Mr. Lamborn in the quotation 

 from his letter printed below. Prof. Poulton said that 

 although the subject had been extensively discussed he 

 thought it was important to show that the haii's were a 

 powerful defence against natural enemies, and also that they 

 were spread through the air — a fact he had himself observed 

 in studying the cocoons of Forthesia similis, Fuessly. Although 

 he had been careful to touch the cocoons only with the tips 

 of the forceps he well remembered the irritation which had 

 been caused, especially on the neck beneath the collai-. 



