( iii ) 



Exhibitions. 



" Moths of the Limberlost." — Mr. E. B. Ashby ex- 

 hibited a beautifully illustrated book entitled ' : Moths of the 

 Limberlost," by Mrs. Gene Stratton Porter. The illustra- 

 tions were from photographs and water-colours. The book 

 contained much carefully-detailed life-history of the species 

 dealt with. 



Comm. Walker suggested that a corresponding book on 

 the Rhopalocera of the same district was a desideratum. 



Mechanical Stage for Microscopic Examination of 

 pinned Insects. — Dr. H. Eltringham exhibited a new 

 mechanical stage for examining pinned insects. He remarked 

 that in his previous design the revolution of the pin on its 

 own axis had to be performed by turning the carrier with 

 the fingers. The present design obviated this difficulty by 

 having two milled heads working concentrically. One of 

 these turned the pin so that the latter was radial to the circle 

 described, whilst the other by means of small grooved pulleys 

 revolved the pin on its own axis. The combination of these 

 movements enabled the pinned insect to be turned in any 

 direction without removing it from the focal plane. 



ClDARIA SUFFUMATA FROM SOUTH-WEST YORKSHIRE. — 



Mr. G. T. Porritt exhibited the three forms of Cidaria stiff u- 

 mata as it occurs in South-west Yorkshire. Curiously in the 

 area of melanism in so many species, C. stiff umata tends to 

 become much paler than the type, culminating in the black 

 and white form, var. porrittii. This is the more remarkable 

 as the melanic form of the species, var. piceata, is not known 

 to occur in South-west Yorkshire at all. 



Ants from the Front. — -Mr. Donisthorpe exhibited two 

 ants taken at the front — Myrmica rugulosa, Xyl., $, taken by 

 Mons. Bondroit at Piamscapelle (Yser), Dec. 14, and Messor 

 barbara var., winged $ taken in the fire trenches at Gallipoli 

 on Dec. 21, 1915, by Lieutenant Noel S. Sennett, F.E.S., 

 who had kindly forwarded it in a revolver cartridge 

 case. Mr. Donisthorpe read some interesting extracts from 

 Lieutenant Sennett's letter which he had received with the 

 ant. 



