( li ) 



to here by Mr. Poulton), tliat tlieso plants were the food it had 

 from the first hved upon. 



There is something peculiar about the pupa skin, which 

 — though it was so much broken l)y the moth in emerging that 

 its details are not very easy to make out clearly — may, I think, 

 furnish an explanation of the abnormity. The position of the 

 encased antennae appeal's to have been irregular, and this might 

 alone be sufficient to account for a change in growth. Another 

 very curious point is that, after searching in vain for the skin of 

 the larval head in connection with the exuviae contained in the 

 cocoon, I at last found it within the pupa skin, adhering to the 

 anal extremity. 



There is a fact connected with the escape of this species from 

 its pupa which I believe has not received notice. I found, on 

 comparing this cocoon with another I had by me, that there is a 

 special device for assisting emergence ; the whole interior of the 

 silken web is coated with a glutinous paste, by means of which 

 the pupa-skin becomes attached firmly to the cocoon. 



The conclusion I arrive at is, that the abnormity of the 

 specimen exhibited is due to the dislocation of the antennse under 

 pupation, in consequence of which their development became 

 aborted." 



Mr. Roland Trimen read "Notes on insects, apparently of the 

 genus Margarodes, Lansd.-Guilding, stated to occur abundantly 

 in the nests of White Ants, and also in those of true Ants, in 

 certain Western Districts of the Cape Colony." 



Mr. Elisha read a paper " On the life-history of Geometra 

 smaragdaria.''' 



Mr. C. 0. Waterhouse communicated a paper " On the Tea- 

 bugs {Helopeltis) of India and Java." 



November 3, 1880. 



Robert McLachlan, Esq., F.R.S., President, in the Chair. 



Donations to the Library were announced, and thanks voted to 

 the respective donors. 



