ROTATORIA OF THE UNITED STATES. 
79 
ROTIFER Schrank. 
14. R. vulgaris Schi'auk. 
Common among the plants of the bottom of Lake Erie about South Bass Island and in East 
Harbor; also from the two swamps on the island. 
In dirt from the crevices of pavements of Philadelphia (Leidy, ’74 &)• Summit of Roan Mountain, 
North Carolina (Leidy, ’80). Lake Erie (Vorce, ’82). Pond near Bangor, Me. (J. C. S., ’83). Exhib- 
ited in New York (Mitchell, ’86, Helm, ’89). Shiawassee River at Corunna, Mich. (Kellicott, ’88). Pools 
near Cincinnati, Ohio (Turner, ’92). Lake St. Clair and various inland lakes of Michigan (Jennings, 
’94). Sandusky Bay, Lake Erie (Kellicott, ’96). Pine Lake, near Charlevoix, Mich. (Jennings, ’96). 
Waters connected with the Illinois River at Havana, 111. (Hempel, ’98). Hanover, N. H. (H, S. J.). 
15. R. tardus Ehrenberg. 
Abundant in the swamps on South Bass Island and in East Harbor, Lake Erie ; also in Portage 
River, Ohio. The specimens found in this region had the spurs much shorter and thicker than are 
figured by Hudson and Gosse (’89) and Jauson (’93). In every other respect, however, it was exactly 
Ehrenberg’s B. tardus. I have since seen at Hanover, N. H., specimens having the long narrow spurs 
figured by Gosse and Janson. 
Shiawassee River at Corunna, Mich. (Kellicott, ’88). Lake St.Clair (Jennings, ’94). Sandusky 
Bay, Lake Erie (Kellicott, ’96). Pool on the shore of Pine Lake at Charlevoix, Mich. (Jennings, ’96). 
Waters connected with the Illinois River at Havana, 111. (Hempel, ’98). 
It.macroceros Gosse. — Shiawassee River at Corunna, Mich. (Kellicott, ’88). Lake St.Clair (Jen- 
nings, ’94). Sandusky Bay, Lake Erie (Kellicott, ’96). 
li. elongatus Weber. — Bogs, Corunna, Mich. (Kellicott, ’92). Bottom of Lake Michigan in the 
neighborhood of Charlevoix, Mich. (Jennings, ’96). 
B. trisecatus Weber.— Lake St. Clair and pools on shore of Pine Lake near Charlevoix, Mich. 
(Jennings, ’94 and ’96). 
Ii. mento Anderson.— Lake St. Clair (Jennings, ’94). 
B. neptunius Ehrenberg. — Pittsburg, Pa. (Mellor, ’88). Lake St. Clair (Jennings, ’94). W^aters 
connected with the Illinois River at Havana, 111. (Hempel, ’98). 
B. macrurus Schrank. — Shiawassee River "at Corunna, Mich. (Kellicott, ’88). Sandusky Bay, 
Lake Erie (Kellicott, ’96). Waters connected with Illinois River at Havana, 111. (Hempel, ’98). Very 
abundant in water from a ditch at Hanover, N. H. (H. S. J.). 
Callidina papillosa Thompson. Swamp on shore of Pine Lake near Charlevoix, Mich. (Jennings, ’96). 
C. constricta Duj. — With the last (Jennings, ’96). 
C. magna Plate. — With the last (Jennings, ’96). 
C. musculosa Milne. — Bottom of Lake Michigan near Charlevoix, Mich. (Jennings, ’96). 
C. eremita Bryce. — Swamp 5 miles from Norwich, Yt. (H. S. J.). 
C. elegans Ehrenberg. — Doubtfully reported by Kellicott (’96) from Sandusky Bay, Lake Erie. 
Waters connected with Illinois River at Havana, 111. (Hempel, ’98). 
C. socialis Kellicott. — On the larva of Pseplienus lecontei, Shiawassee River at Corunna, Mich. 
(Kellicott, ’88). 
C. rediviva Ehrenberg? — North Carolina, Bose. (See Ehrenberg, ’43.) 
Family 4. ADINETADiE. 
Adineta vaga Davis. — Tamarack swamp, on shore of Pine Lake, near Charlevoix, Mich. (Jen- 
nings, ’96). 
Order III. PLOIMA. 
Sub-Order ILLORICATA. 
Family 5. MICROCODONTIDiE. 
Microcodon clavus Ehrenberg.— Pond near Bangor, Me. (J. C. S., ’83). Crooked Lake, Newaygo 
County, Mich. (Jennings, '94). West Twin Lake, near Charlevoix, Mich. (Jennings, ’96). 
Microcodules orbicnlodisous Thorpe. — Lake St. Clair (Jennings, ’94). Pool on shore of Pine Lake, 
near Charlevoix, Mich. (Jennings, ’96). Pond in sand on shore of Sandusky Bay, Sandusky, Ohio 
(Kellicott, ’97, under the name M. dubius Bergendal). 
