Vol. xf., No. 4. 
April, 1906, 
CONTENTS. Page 
open Air Treatment of Monkeys in the Dublin Zoological 
Gardens.— R. F. ScHARFF, Ph.D. (Plates), . .. 85 
News Gi^eaning ; — 
The Swiue}' Lectureship, . . ... • • • . • • S6 
A New Irish Polyzoon. — A. R. N1CH01.S, M.A., M.R.I.A., . . 87 
A Simple Method of representing Geographical Distribution. — 
R. Liv. Praeger, .... . . . . . . 88 
The Struggle for Existence.— C B. Moffat, B. A., . . . . . 95 
Irish Societies:— 
Royal Zoological Society. Belfast Nat. Hist, and Phil. Society, . . 106 
Irish Society for Protection of Birds. Belfast Nat. Field Club, . . 107 
Tyrone Nat. Field Club. Dublin Nat. Field Club. Dublin Microscopical 
Club, ... .. .. .. .. 108 
Notes : — 
Porella Itevigata, var. killarniensis, . . ' . . . . . . 109 
New Crustacea from the West Coast, . . . . . . . . 109 
Buccinum and Patella KJokken-niodding at Cranfield, Co. Down. — 
R. Wki^ch, . . . . . . . . . . , . 109 
Helicella zakarensis in Co. Down. — A. W. SteI/FOX, .. 110 
Helix virgata in Co. Down.— J. N. MiLNB, .. .. .. iii 
Little Owl in Ireland.— A. R. Nichols, M. A., .. ,.112 
Pied Blackbirds near Poyntzpass.— Rev. W. F. Johnson, M. A., 112 
Lapland Bunting in Ireland. Corncrake in February.— W. J. Wii,i.iams, 112 
TERMS FOR ADVERTISEMENTS IN IRISH NATURALIST." 
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