THE OTTAWA FIELD-NATURALISTS' CLUB 



President: M. Y. WiLLIAMS 

 y ice-Presidents: L. D. BuRLING ; R. M. ANDERSON 



Treasurer : 

 Secretary: c. B. Hutchings 



Clyde L. Patch (Entomological Branch 



(Geological Survey) Dept. Agriculture.) 



Additional Members of Council: HoYES Lloyd; W. T. Macoun ; G. A. Miller; Miss M. 

 E. Cowan; C. B. Hutchings; C. M. Sternberg; H. I. Smith; F. W. Waugh; 

 P. A. Taverner; E. Sapir; E. M. Kindle; W. J. Wintemberg; R. E. Delury; 



F. Johansen. 



THE CANADIAN FIELD-NATURALIST 



Editor : 



Arthur Gibson, 



Entomological Branch, Department of 



Agriculture, Ottawa. 



Associate Editors: 



E. Sapir - - Anthropology A. G. Huntsman - Marine Biology. 

 M. O. Malte - - Botany P. A. Taverner - - - Ornithology 



F. R. Latchford - Conchology E. M. Kindle - . - Palaeontology 

 M. Y. WiLUAMS - - Geology R. M. Anderson . - - - Zoology 



CONTENTS. 



Vertebrates of the Otter Lake Region, Dorset, Ont. By A. H. Wright and S. E. R. 



Simpson 161 



Further Notes on the Orchids of Hatley, Que. By H. Mousley 169 



Further Notes on the Rhopalocera or Butterflies of Hatley, Que. By H. Mousley 173 



Obituary: C. Gordon Hewitt. By Norman Criddle 174 



John Macoun Memorial 176 



Reviews: The Auk for 1920 177 



Index 179 



THE CANADIAN FIELD-NATURALIST, lately The Ottawa Naturalist, estab- 

 lished thirty-two years ago, "to publish the results of original research or investigation in all 

 departments of natural history," is issued monthly, excepting for the months of June, July and 

 August. 



Papers, notes and photographs should be addressed to the Editor. Manuscript should be 

 typewritten. 



Subscriptions cover the current year, except those taken out during last quarter when they 

 will be applied on the following year, the remaining numbers of current year being sent free. 

 Payments should be made to the Treasurer, Mr. C. B. Hutchings, Entomological Branch, Dept. 

 of Agriculture, Ottawa. Price of this volume $1.50; single copies 20c each. 



