ON A SPECIMEN OF MILIOLINA CIRCULARIS. 293 



April 13, 1915. 



E. T. Newton, Esq., F.R.S., 

 in the Chair. 



The Secretary read the following report on the Additions made 

 to the Society's Menagerie during the month of March 1915 : — 



The number of registered additions to the Society's Menagerie 

 during the month of March was 49. Of these 26 were acquired 

 by presentation, 15 were received on deposit, 3 in exchange, and 

 5 were born in the Gardens. 



The number of departures during the same peiiod, by death 

 and removals, was 127. 



Amongst the additions special attention may be directed to :— 



1 Philippi's Tucutucu (Ctenomt/s mendocinus), new to the 

 Collection, from Cordova, Argentina, presented by Wilfred A. 

 Smithers, C.M.Z.S., on March 2nd. 



4 Black-backed Jackals (Canis mesomelas), born in the 

 Menagerie on March 26th. 



Dr. A. Smith Woodward, F.R.S., F.Z.S., exhibited an anterior 

 horn of a Woolly Rhinoceros (Rhinoceros antiquitatis), obtained 

 for the British Museum, from frozen earth in Northern Siberia, 

 by Mr. Bassett Digby. The horn must have measured originally 

 nearly a metre along the curve of the anterior border. It has 

 been cut and trimmed in places by the finders, but is sufficiently 

 well preserved to show its laterally compressed shape and sharp 

 posterior border. 



Mr. D. Seth-Smith, F.Z.S., Curator of Birds, exhibited a series 

 of lantern-slides, from photographs taken in the Gardens, showing 

 the nuptial display of the male Great Bustard (Otis tarda). 



Mr. E. Heron-Allen, F.L.S., F.Z.S., exhibited, and invited 

 suggestions relative to, a lantern-slide representing a specimen 

 of Miliolina circularis (d'Orb.), the final chamber of which, being 

 dissected off, revealed a fully-grown second individual inside. It 

 was suggested that it represented a case of arrested twinning. 

 The exhibitor was convinced that it had nothing to do with the 

 phenomenon of viviparous reproduction recently exhibited by 

 him. 



