94 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
79. M. closterocerca Sehmarda. 
Single specimen taken in towings in Lake Erie 2-J miles nortli of Kelley Island. 
Lake St.Clair (Jennings, ’94). Lake Michigan, Round Lake, and Pine Lake, near Charlevoix, 
Mich. (Jennings, ’96). Waters connected with the Illinois River at Havana, 111. (Hempel, ’98). 
80. M. hamata Stokes. "(Plate 22, tigs 42, 43, and 44.) 
East Swamp, South Bass Island. 
Trenton, N. J. (Stokes, ’966). 
M. truncata Turner.— Near Cincinnati, Ohio (Turner, ’92). 
M. mollis Gosse. — Lake St. Clair (Jennings, ’94). Waters connected with the Illinois River at 
Havana, 111. (Hempel, ’98). 
M. robusta Stokes. — Trenton, N. J. (Stokes, ’966). 
M. ovata Forbes. — Warm spring on the shore of Yellowstone Lake, Yellowstone National Park 
(Forbes, ’93). 
M. 6 ipes Stokes.— This is the same species as is recorded and figured above as M. bulla. Trenton, 
N. J. (Stokes, 966). 
Family 16. COLURID.®. 
COLURUS Ehrenberg. 
This is one of the genera which would repay a thorough study and revision. 
81. C. bicuspidatus Ehrenberg. 
On Elodea from East Harbor, Lake Erie. 
Chippewa Lake, Mecosta County, Mich. (Jennings, ’94). Waters connected with the Illinois 
River at Havana, 111. (Hempel, ’98). 
82. C. deflexus Ehrenberg. 
In Cliara from bottom of Put-in Bay Harbor, Lake Erie; in swamp near fish-hatchery on South 
Bass Island. 
Sandusky Bay, Lake Erie (Kellicott, ’96). Waters connected with the Illinois River at Havana, 
111. (Hempel, ’98). 
83. C. obtusus Gosse. 
On aquatic plants in shallow parts of Lake Erie about South Bass Island. 
Shiawassee River at Corunna, Mich. (Kellicott, ’88). Waters connected with the Illinois River 
at Havana, 111. (Hempel, ’98). 
C. agilis Stokes. — Trenton, N. J. (Stokes, ’96c). 
C. caudatus Ehrenberg. — Shiawassee River at Corunm , Mich. (Kellicott, ’88). 
METOPIDIA Ehrenberg. 
84. M. lepadella Ehrenberg. 
Abundant in vegetation of shallow and swampy parts of Lake Erie about South Bass Island and 
in the swamps on the island. 
The species to which I have applied the above name is abundant everywhere and is very variable, 
so as to give much opportunity for the creation of new species, an opportunity which has been fully 
utilized. A thorough revision of the species of Metopidia would be of much value to the systematist, 
besides doubtless furnishing an interesting study in the field of variation. 
Shiawassee River at Corunna, Mich. (Kellicott, ’88). Lake St. Clair and McLaren Lake, Oceana 
County, Mich. (Jennings, ’94). Pool on the shore of Pine Lake; Old Channel, Charlevoix, Mich. (Jen- 
nings, ’96). Sandusky Bay, Lake Erie (Kellicott, ’96). Pools, Hanover, N. H. (H. S. J.). 
85. M. acuminata Ehrenberg. 
Common in aquatic plants from bottom of Put-in Bay Harbor, Lake Erie. 
Pond near Bangor, Me., (J. C. S., ’83). Lake St. Clair; Crooked Lake. Newaygo County, Mich. ; 
Chippewa L., Mecosta County, Mich. (Jennings, ’94). Round Lake, Charlevoix, Mich. (Jennings, ’96). 
Waters connected with Illinois River at Havana, 111. (Hempel, ’98). Pool near Norwich, Vt. (H. S. J.). 
86. M. rhomboides Gosse. 
In Cliaraceae from Put-in Bay Harbor and East Harbor, Lake Erie, and from swamps on South 
Bass Island. 
Chippewa Lake, Mecosta County, Mich. (Jennings, ’94). Waters connected with the Illinois 
River at Havana, 111. (Hempel, ’98). 
