LYMNIDA OF NORTH AMERICA. 345 
Tyres: Evilis Lea, one specimen, No. 119481, Smithsonian In- 
stitution ; sebra Tryon, four specimens, Academy of Natural Science, 
Philadelphia, No. 58629. 
Tyre Locatity: Evilis, near Cincinnati, Ohio; sebra, Minnesota. 
ANIMAL, JAW, RApULA and GENITALIA: Not examined. 
RANGE (Figure 39): Ohio to Kansas, northward to northern 
Minnesota and northern Michigan. 
Evxilis is typical of the humid divisions of the Transition and 
Upper Austral life zones, from whence it has crossed into the southern 
part of the Boreal (Canadian) life zone, in Minnesota and Michigan. 
It is a Mississippi Valley and Great Lakes species, common to the 
Canadian and Upper Mississippian regions. Its differentiation from 
reflexa will doubtless extend its range. 
RECORDS. 
UNITED STATES. 
Intino1is: Cook Co. (Baker); Calumet River and Calumet Lake, Cook 
Co. (Baker; Calkins; Walker); Mercer and Winnebago cos. (Ferriss); Berry 
Lake, Cook Co. (Higley); sloughs of Winnebago Co. (Hinkley; Walker) ; 
Will Co. (Marsh) ; Cedar Lake, Lake Co.; northern Illinois (State Laboratory) ; 
Aledo, Mercer Co. (Walker). 
INDIANA: George Lake, Lake Co. (Woodruff). 
Iowa: Iowa River (Dall); Dallas Co.; Des Moines, Polk Co.; Burling- 
ton, Des Moines Co. (Keyes); pond near West Liberty, Muscatine Co.; north 
of Iowa City, Johnson Co. (Pilsbry) ; Spirit Lake, Dickinson Co.; Algona, Kos- 
suth Co. (Shimek); Davenport, Scott Co. (Tryon); vicinity of Des Moines 
(Van Hyning); Boone Co.; Iowa River (Walker) ; Muscatine, Muscatine Co. 
( Witter). 
Kansas: Lake Farland, McPherson Co. (Call; Cragin). 
MicHicAN: In small lake, Antrim Co. (Walker). 
Minnesota: Elk River, Sherburne Co. (Bailey) ; Lake Minnetonka, Hen- 
nepin Co. (Cope); Minneapolis, Hennepin Co. (Hemphill); Lake Albert Lea, 
Freborn Co. (Hemphill; Walker); Pelican Lake, Crow Wing Co. (Nason) ; 
Belle Lake, Wright Co. (Sargent); Lake Calhoun, Hennepin Co. (Walker). 
Onto: Cincinnati, Hamilton Co. (Allan; Anthony; Lee; Shaffer) ; Poland, 
Mahoning Co. (Kirtland; Lea; Walker); pond near Congress Lake, Stark Co. 
(Walker). 
Wisconsin: Milwaukee, Milwaukee Co. (Lapham); East River, Green 
Bay and DePere, Brown Co. (Marston; Wis. Nat. Hist. Surv.) ; Fox River and 
Green Bay (Walker). 
GEOLOGICAL DIsTRIBUTION: Unknown. 
EcoLtocy: Exilis is an inhabitant of sloughs, ponds and rivers 
which dry up more or less during a portion of the year. 
ReMARKS: This very characteristic and usually very distinct spe- 
cies is a common Lymnza in the Upper Mississippi Valley streams 
and ponds. Its most pronounced distinguishing features are the Jong, 
