17 
Invertebrates, Molluscs — Concluded 
By Gift — Concluded 
L. S. Russell, Geological Survey: 3 lots, Perce, Quebec; 2 lots, Danford lake, 
Quebec. 
C. H. Young, National Museum: 1 specimen Oxyslyla. 
Norman Mattox, 301 Natural History Building, Urbana, Illinois: 15 lots land 
shells, Camp Friedlander, Ohio. 
Bros. Etienne and Alphonse, Hull, Quebec: 15 specimens Helisoma trivolvis, 
Leamy lake, Quebec. 
C. E. Johnson, National Museum: 3 lots, Rideau park (land). 
Miss A. E. Wilson, Geological Survey: 1 lot Stagnicola palustris nuttalliana, 
Moosonee, Ontario. 
J. Skillen, Geological Survey: 15 lots freshwater shells, James island, south of 
Kars, Ontario. 
By Exchange 
Dr. W. J. Clench, Museum of Comparative Zoology, Cambridge, Mass.: 2 
lots, paratypes of Physa johnsoni Clench and P. plena Clench. 
J. P. Oughton, Royal Ontario Museum of Zoology, Toronto, Ontario: 35 lots 
Canadian mollusca. 
Miss B. T. Bauer, Hamilton Scientific Association Museum, Hamilton, Ontario: 
8 species Canadian Naiades. 
W. J. Eyerdam, Seattle, Washington, U.S.A.: 27 species land and freshwater 
molluscs, Washington, Oregon, British Columbia, and Alaska. 
Dr. F. C. Baker, Museum of Natural History, University of Illinois, Urbana, 
Illinois: 300 named lots, land, freshwater, and marine mollusca. 
Specimens Distributed on Account of Exchange 
J. P. Oughton, Royal Ontario Museum of Zoology, Toronto, Ontario: 35 lots 
Canadian mollusca. 
Miss B. T, Bauer, Hamilton Scientific Association Museum, Hamilton, On- 
tario: 6 lots Canadian mollusca. 
D. H. Baker, Auckland, New Zealand: 20 lots Canadian mollusca. 
Dr. F. C. Baker, Museum of Natural History, University of Illinois, Urbana, 
Illinois: 50 lots Canadian mollusca (Exchange incomplete). 
Norman Mattox, 301 Natural History Building, Urbana, Illinois: 15 lots land 
and freshwater shells of Canada. 
Dr. W. J. Clench, Museum of Comparative Zoology, Cambridge, Mass.: 2 
lots Canadian Physa. 
Sr. Marie-Jean-Eudes, Pensionnat de Ste.-Anne, Lacbine, Quebec: 29 lots land 
and freshwater shells of Canada — presented. 
Insects 
By Gift 1,115 
Charles H. Young, National Museum, Ottawa, 1,115 specimens of mounted 
Lepidoptera, collected in the vicinity of Ottawa, and in some cases raised 
from pupse in laboratory, deposited in the National Collection of Insects. 
National Herbarium 
In the herbarium the work of mounting, labelling, and filing speci- 
ments from the large mass of material that has accumulated in past years, 
and frequent accessions from the regular exchange correspondents of the 
institution has been carried on. During the time from August 1, 1934, to 
March 31, 1935, 2,523 sheets of specimens were labelled and numbered. 
The number of sheets officially registered and numbered totalled 129,211 
on March 31, 1935. A considerable proportion of the 1934-1935 acces- 
sions have not yet been catalogued. Considerable time is taken in making 
lists of specimens sent on loan to other institutions, checking specimens on 
