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THE SECRETARY ON ADDITIONS TO THE MENAGERIE. 



June 1st, 1920. 



Sir Sidney F. Harmer, K.B.E., F.R.S., Vice-President, 

 in the Chair. 



In the absence of Prof. R. T. Leiper, F.Z.S., his exliibition of 

 lantern-slides ilhistrating the Experimental transmission of some 

 Helminth infections, was described by Dr. Vevers. Specimens 

 of Schilbe mystus, Clcirotes laticeps, and IHlapia nilotica infected 

 with encysted trematode larva?, an(i fonnd near Cairo, were 

 shown. By feeding young wolves, bre{l in captivity, wnth these 

 fishes Prof. Leiper succeeded in rearing the adult worms in 

 enormous numbeis. The cysts of Schilbe mystus gave rise to 

 Hemistoma (Alaria) alatam of the dog, and those of Clcu^otes 

 laticeps to Monostoma pmnilio Looss. M, paviilio, which would 

 appear to 1)e moi-e closel}^ related to Tocotre7na than to Monostoma, 

 is normally a parasite of the Pelican ar^d Kite in Egypt. That 

 it can be reared in enormous numbers in Wolves undermines the 

 conception of "physiological species"' applied by Looss to certain 

 trematode irfections. 



Dr. P. Chalmers Mitchell, F.R.S., gave an account, illustrated 

 with lantern-slides, of his recent Aei-oplane Trij) from Cairo to 

 TaV)ora, and described the character of the countiy passed over 

 and the birds and mammals seen. 



June 15th, 1920. 



Prof. E. W. MacBride, F.R.S., Yice-President, 

 in the Chair. 



The Secretary read the following Report on the Additions to 

 the Society's Menagerie during the moi:ith of May, 1920 : — 



The registered additions to the Society's Menagerie du]-ing the 

 month of May were 398 in number. Of these 63 were acquired 

 by presentation, 188 were deposited, 130 were purchased, 4 were 

 received in exchange, and 13 were born in tlie Menagerie. 



The following may be specially mentioned : — 



Mammalia. 



1 Cheetah [Cyncehnms jiLbatus), from Kilosso, Tanganyika 

 Territory, presented by C. MacMahon, Esq., Assistant Political 

 Officer of Kilosso, on May 1st. 



2 Capybaras {Ilydrochoerus hydrochoerus), bred in England, 

 purchased on May 12th. 



1 Arabian Oiyx {Oryx leucoryx), from Central Arabia, depo- 

 sited by H.M. The King on May 14th. 



