() xxx =) 
16. Catopsilia florella, Fabr., is another insect which was 
fairly common in 1912 but quite absent in 1913. Being a 
strong-flying butterfly it is hard to catch. The males seem 
decidedly more common than the females, and also easier to’ 
catch. 
17. Colias hyale, auct., var. marnoana, Rogenh. This 
butterfly is generally to be found in grassy places, though not 
always abundantly. The pale variety of the female would 
appear to be the commoner. 
AMAURIS EGIALEA STROKING THE BRANDS OF THE HIND- 
WINGS WITH ITS ANAL TUFTS, AGAIN OBSERVED BY W. A. 
LAMBORN.—Prof. PouLtron said that he had just received a 
letter written Sept. 19-23, 1913, from Mr. W. A. Lamborn, 
who was now resident, as Entomologist to the Agricultural 
Department of Southern Nigeria, at Moor Plantation, Ibadan. 
The letter contains the following interesting observation dated 
Sept. 20 :— 
“T saw this morning a male Amawris egialea, Cram., settled 
on a leaf in the sun, brushing its scent-patches with the anal 
tufts, the abdomen being anteflexed. The wings were midway 
between the vertical and horizontal positions, and at the end 
of each act of brushing they were suddenly brought almost, 
together and then expanded to the original position.” 
Mr. Lamborn’s earlier observation on the same species, 
made Jan. 30, 1912 (Proc. Ent. Soc. 1912, p. xxxv), states 
that the wings were “ over-flexed,” their outer margins being 
in contact with the leaf and therefore below the general level of 
the body. The difference in attitude was an interesting one, 
and might perhaps be explained by the use of the scent-organ 
at different periods in the life of the imago or in different 
states of physiological activity. The sudden movement of the 
wings suggested that the object was to promote the passage 
of scent from within or between the secreting cells into the 
cups on the surface of the brand, as described and figured by 
Mr. Eltringham, on Plate XX of this year’s Transactions. 
Again, it was possible that the motion promoted the circulation 
of fluids in the neighbourhood of the veins, or of air in the 
tracheal tubes of the wing. That the motion bore some relation 
to the function of the scent-brand could hardly be doubted. 
