The Scottish Naturalist 
dA Magazine devoted to Zoology 
With which is incorporated 
“The Annals of Scottish Natural History” 
EDITED BY 
JAMES RITCHIE, M.A, D.Sc, F.R.S.E., 
Keeper, Natural History Department, Royal Scottish Museum 
WARE IE ACME SE VeAeN Se HakoSeH.,) Harc: 
Member of the British Ornithologists’ Union 
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Assistant-Keeper, Natural History Department, Royal Scottish Museum 
ASSISTED BY 
EVELYN V. BAXTER, F.Z.S., H.M.B.O.U. | W. EAGLE CLARKE, I.S.0., LL.D. 
LEONORA J. RINTOUL, F.Z.S., H.M.B.O.U. ANDERSON FERGUSSON, F.E.S 
H. S. GLADSTONE, M.A., F.R.S.E., F.Z.S. 
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EDINBURGH: OLIVER & BOYD, TweeppaLe Court 
LONDON: GURNEY & JACKSON, 33 Parernoster Row 
1921 
