31 



including co-types of CallicJiroma conccntricale, Jordan, and 

 Atilacopiis ihoracicalis, Jordan. 



A fine male example of Tirmnala {Melinda) morgeni from 

 Bipindi, Cameroons (Dec. 1899), is of the highest interest for 

 the study of mimicry. Tirinnala is an Oriental and Austro- 

 Malayan genus of Danaine butterflies, of which representatives 

 have invaded the Ethiopian Region from the east. The most 

 eastern of the intruders, T. formosa, has departed least from 

 the appearance presented by the Oriental species of the 

 genus. On the west shores of the Victoria Nyanza we meet 

 with a second species, T. mercedonia, far more modified and 

 much darker than fornwsa. Finally on the west coast the 

 rare T. morgeni has changed far more completely in the same 

 direction and has become a black white-marked butterfly and 

 a wonderful mimic of the indigenous Ethiopian Danaines of the 

 genus Amaiiris. Probably no single specimen ever received is 

 of so much interest in relation to the special work of the 

 Department, as this generous donation from the neighbouring 

 Zoological Museum at Tring. 



Eleven Acridiidae and 2 Lomsiidae were presented by 

 Dr. Malcolm Burr, D.Sc, F.G.S., F.E.S., New College, to 

 whom the University is indebted for many large and impor- 

 tant additions to the collection of Orthoptcra. 



Six Hesperidae fi-om various localities were presented by 

 H. H. Druce, Esq., F.L.S., F.E.S. The specimens were much 

 wanted in the general collection. 



The Hesperid butterfly, Paramimus stigma, from Taboga 

 Island, Bay of Panama (Oct. 1881), was presented by the 

 captor, Commander J. J. Walker, R.N., Hon. M.A., F.E.S., 

 together with 3 Castniid moths, Synemon sophia, from Subiaco, 

 near Fremantle, W. Australia (Nov. 1890). 



Commander Walker also presented to the bionomic collec- 

 tion an example of the Longicorn beetle, Tragocerus formosiis, 

 from Cooktown, N. Queensland. This species is of peculiar 

 interest in relation to the study of mimicry in Coleoptcra. It 

 is common for beetles, especially Longicorns, to mimic the 

 black-and-yellow-banded stinging Hymenoptera. In many 

 of them, the characteristic pattern exists on the body of the 



