JUNE-JULY, 1915 



VOL. XXIX, Nos. 3 and 4 



THE 



OTTAWA 

 NATURALIST 



Published by The Ottawa Field-Naturalists' Club 



JCOUOt: 



ARTHUR GIBSON, 

 Entomological Branch, Department of Agriculture, 



OTTAWA. 



H00ocfate ]5Ditor0: 



Harlan I. Smith, W. H. Harrington, P. A. Taverner, 



Anthropology. Entomology. Ornithology. 



M. O. Malte, Ph. D. H. M. Ami, D.Sc L. M. Lambe, F.G.S., 



Botany. Geology. Palceontology. 



Prof. John Macoun, M.A. Otto Klotz, LL.D. C. Gordon Hewitt, D.Sc- 

 Conchology. Meteorology. Zoology. 



CONTENTS: 



On the Validity of the Genus Plethopeltis. By R. M. Field - 37 



Correspondence -----____ 43 



A Cheap Case for Small Museums. By Harlan I. Smith - - 44 

 Conchological Notes ---_-___5i 



The Rolla L. Grain Co., Limited 



ISSUED AUG. 11. 191S 

 Entertd at Ottawa Post Offtci as second class matter \ 



