16 
Spongilla lacustris has recently been received from Dr. F. Johansen, 
who collected it during the summer of ee in a pond on an island in 
James Bay, Canada, latitude about 521° 
Specimens without gemmules, which are ee Spongilla icles 
were collected by Professor H. B. Ward in July, 1919, in Long Lake, in 
the Copper River Basin, Alaska, latitude 61° 25’ N. 
Major George H. Conklin, M. D., of Superior, Wisconsin, who was 
an enthusiastic collector and student of fresh-water sponges about thirty 
years ago, has furnished the following list of species found by him during 
the years 1890, 1891, and 1892 at various places in Douglas county, in 
the northwestern part of Wisconsin: Spongilla fragilis, S. lacustris, S. 
igloviformis, Ephydatia fluviatilis, E. crateriformis, Heteromeyenia argy- 
rosperma, Tubella pennsylvanica, and Carterius tubisperma. Unfortu- 
nately his collections were destroyed by fire some years ago. It is prob- 
able that the name Ephydatia fluviatilis was applied to both E. fluviatilis 
and E£. muiilleri in accordance with the practice of Potts and other Ameri- 
can workers of the time. The only record differing from what one 
would expect, considering the records in neighboring states, is that of 
Spongilla igloviformis, this being the only report of it west of the 
Alleghany Mountains. 
TABULAR PRESENTATION OF DISTRIBUTION DaTA 
Records of the North American species of fresh-water sponges and 
the states from which they have been reported in various scientific pub- 
lications are indicated in the following table by an asterisk. As stated 
on preceding pages, new records in this paper are indicated by the letter 
S; records from the paper by Mills, quoted on preceding pages and not 
otherwise listed, are indicated by the letter M ; unpublished records based 
on specimens in the United States National Museum are indicated by the 
letter U; and records of species in Wisconsin, furnished by Dr. Conklin, 
and not otherwise listed, are indicated by the letter C. In a few cases 
in which Ephydatia fluviatilis is reported, there is nothing to indicate that 
the specimens may not actually have been E. miilleri, the record is there- 
fore indicated by an interrogation point under each name. 
It is not improbable that a few published records have been omitted 
from the table, since several papers dealing with the subject have not 
been accessible, but this is intended to serve only as a “report of progress.” 
