( 1 ) 



There are several Old World species (Africa and Japan) 

 standing under Tropideres which come also close to SpO'thor- 

 rhampkiis, but have thinner antennae. 



Dr. F. A. DiXEY exhibited specimens of eight species of 

 Pierine butterflies, and remarked on them as follows : — 



"It is well known that many kinds of butterflies, especially 

 Pierines, are in the habit of congregating in large numbers on 

 damp patches of soil for the sake of absorbing the moisture. 

 This phenomenon occurs to some extent in temperate regions, 

 but it is in tropical and sub-tropical districts of both the old 

 and the new world that the size and frequency of such 

 assemblages have attracted most attention. Mr. Distant 

 ('Rhopalocera Malayana,' 1882-1886, pp.284, 285) has brought 

 together several instances from the experience of various 

 travellers, and many others are on record. By the kindness 

 of Professor Poulton I am able to show representative 

 examples of 153 specimens captured under these conditions 

 by Mr. 0. A. Wiggins, a well-known ofiicial of the British 

 East African Protectorate, to whom Science is indebted for 

 the fice collection of Rhopalocera from Uganda lately described 

 by Mr. Neave ('Novitat. Zoolog.,' vol. XI, 1904). Mr. Wiggins's 

 note to the series represented by the exhibit is as follows : — 



" ' All these (over 150) were caught in one sweep of the net 

 over a pool within a few yards of the Ripon Falls, Jinja, Lake 

 Victoria Nyanza, by C. A. Wiggins, on Feb. 2, 1906.' 



" The catch consists entirely of Pierines of the two genera 

 Pinacopteryx and Belenois. Eight species are represented, the 

 numbers being as follows : — 



Pinacopteryx vidua, Bull. ..... 104 



,, i^^f/ect, Boisd. (northern form) . . 17 



,, liliana, Grose Smith .... 5 



Belenois soliliicis, Butl. ...... 1 



,, suheida, Fekl. (i'orin instabilis Butl.) . . 8 

 ,, formosa, Butl. . . • . . .12 



,, gidica, Godt. ...... 1 



,, severina, Cram, (form bofjuensis, Feld.) . 5 



Total . . . .153 



" Every one of the 153 specimens is a male. The B. gidica 

 is of the * wet-season' form, the others are all more or less 'dry.' 



