PLATE CXIII. 



Pemphious pallidus. (Page 127.) 



Fig. 1. — Queen Aphis or foundress. 



Fig. 2. — Pupa. 



Fig. 3. — Imago. The stigmata are pale emerald 

 green, with a dark internal spot. 



Fig. 4. — Antenna of the Queen Aphis with its isolated 

 tubercles. 



Fig. 5. — Gall formed on the midrib of ulmus. 



Pemphigus buesarius. (Page 117.) 

 See also Plate CXI, figs. 1—7. 



Fig. 6. — Queen Aphis, showing the small legs and 

 antennae of the insect. 



Fig. 7. — Part of a small branch of poplar, on the 

 woody portion of which a rugose gall has been con- 

 structed, with two openings, one at the top and the 

 other at the side o o. This and some other pseudo galls 

 were sent to me by M. Lichtenstein with the remark that 

 he considered them to be the work of P. hnrsarius, 

 whilst the pyriform galls he considered to belong to a 

 different species. In this uncertainty, I prefer simply 

 to call attention to their different forms, and not to 

 name the insects on my insufficient knowledge. The 

 imagos which issue from these galls are very like 

 the British insects, but they show some modification 

 in the form of their antennal joints. 



Fig 8. — Antennal joint of imago from gall (fig. 7). 



