ROTATORIA OF THE UNITED STATES. 
89 
Family 12. DINOCHARIDJE. 
DINOCHARIS Ehrenberg. 
52. D. pocillum Ehrenberg. 
East Harbor, Lake Erie, in bottom vegetation. 
Minneapolis, Minn. (J. W., ’83). Pond near Bangor, Me. (J. C. S., ’83). Minnesota (Herrick, ’85). 
Shiawassee River, at Corunna, Mich. (Kellicott, ’88). Lake St. Clair and the following inland 
lakes of Michigan : McLaren Lake, Oceana County ; Crooked Lake, Newaygo County ; Chippewa Lake, 
Mecosta County (Jennings, ’94). Round Lake, Charlevoix, Mich. (Jennings, ’96). Sandusky Bay, 
Lake Erie (Kellicott, ’97). Waters connected with the Illinois River at Havana, 111. (Hempel, ’98). 
53. D. tetractis Ehrenberg. 
Bottom vegetation of Put-in Bay Harbor and East Harbor, Lake Erie; more numerous than the 
last. Herrick (’85, p. 52) mentions as occurring in Minnesota a species of Dinocharis resembling 
I). pocillum, but lacking the spine on last joint of the foot ; this was evidently D. tetractis. Shiawassee 
River, at Corunna, Mich. (Kellicott, ’88). Lake St. Clair and the following inland lakes of Michigan : 
Crooked Lake, Newaygo County ; Chippewa Lake, Mecosta County (Jennings, ’94). West Twin Lake, 
and pool on the shore of Pine Lake, near Charlevoix, Mich. (Jennings, ’96). Hanover, N. II. (II. S. .J.). 
POLYCHIETUS Perty. 
54. P. subquadratus Perty. 
Bottom vegetation, Put-in Bay Harbor and East Harbor, Lake Erie. 
Lake St. Clair (Jennings, ’94). Old Channel, Charlevoix, Mich. (Jennings, ’96). Sandusky Bay, 
Lake Erie (Kellicott, ’97). 
55. P. collinsii Gosse. 
In Myriophyllum from East Harbor, Lake Erie; in TJtricularia from Portage River, Ohio, not far 
from the mouth. 
Pools and Old Channel, Charlevoix, Mich. (Jennings, ’96). 
P. serica Thorpe. — Sandusky Bay, Lake Erie (Kellicott, ’97). 
SCARIDIUM Ehrenberg. 
56. S. longicaudatum Ehrenberg. 
Very abundant in shallow parts of Lake Erie about South Bass Island and in East Harbor. 
Shiawassee River, at Corunna, Mich. (Kellicott, ’88). Near Cincinnati, Ohio (Turner, ’92). Lake 
St. Clair and the following inland lakes of Michigan: McLaren Lake, Oceana County; Crooked Lake, 
Newaygo County; Chippewa Lake, Mecosta County (Jennings, ’94). Pine Lake and Old Channel, 
Charlevoix, Mick. (Jennings, ’96). Sandusky Bay, LakeErie (Kellicott, ’96). Trenton, N. J. ( ?) (Stokes, 
’96«). Waters connected with the Illinois River at Havana, 111. (Hempel, ’98). 
S. eudactylotum Gosse. — This animal is represented in fig. 1, plate IV, of Herrick, ’85, under the title 
“undetermined.” It was thus evidently found by Herrick somewhere in America; no locality is given. 
Chippewa Lake, Mecosta County, Mich. (Jennings, ’94). - 
Stephanops muticus Ehrenberg. — Said by Herrick (’85) to occur somewhere in America. Lake 
St. Clair; Chippewa Lake, Mecosta County, Mich. (Jennings, ’94). Sandusky Bay, Lake Erie 
(Kellicott, ’97). 
S. lamellaris Ehrenberg. — Minneapolis, Minn. (J. W. ’83). Shiawassee River, at Corunna, Mich. 
(Kellicott, ’88). Sandusky Bay, Lake Erie (Kellicott, ’96). 
S. (Mama Gosse. — Sandusky Bay, Lake Erie (Kellicott, ’96). 
Family 13. SALPINADiE. 
DIASCHIZA Gosse. 
57. D. semiaperta Gosse. 
Abundant in bottom vegetation of Put- in Bay Harbor and East Harbor, Lake Erie. 
Lake St. Clair (Jennings, ’94). Round Lake and pools, Charlevoix, Mich. (Jennings, ’96). 
58. D. lacinulata Ehrenberg. ( Notommata lacinulata.) 
Common in vegetation of bottom of shallow parts of Lake Erie about South Bass Island. 
Shiawassee River, at Corunna, Mich. (Kellicott, ’88). Abundant in Michigan lakes (Jennings, ’94). 
