Harring and Myers—The Rotifers of Wisconsin. 637 
EOSPHORA EHRENBERGI Weber 
Plate LXI, figures 6-9 
Notommata najas Ehrenberg, Abh. Akad. Wiss. Berlin (for 1831) 
1832: 132; Infusionsth. (1838), p. 429, PI. 52, fig. 2. —Leydig, 
Zeitschr. Wiss. Zool. 6 (1854): 38.— Eckstein, Zeitschr. Wiss. Zool. 
39 (1883): 363, PI. 25, fig. 28.— Hudson and Gosse, Rotifera (1886) 
2: 25, PI. 18, fig. 2 .— Wierzejski, Rozpr. Akad. Umiej. Wydz. Mat.- 
Przyr. Krakow II, 6 (1893): 228.— Skorikov, Trav. Soc. Nat. Khar- 
kow 30 (1896): 287.— Weber, Rev. Suisse Zool. 5 (1898): 448, PI. 
18, fig. 4.— Wesch£, Jour. Quekett Micr. Club II, 8 (1902): 327, 
PI. 17, fig. 2 .— Lie-Pettersen, Bergens Mus. Aarbog (for 1909) 
191<P 5 : 40.— Daday, Zoologica 59 (1910): 67, PI 3, fig. 17.— 
Voigt, .Siisswasserfauna Deutschlands, pt. 14 (1912): 96, figs. 172, 
173.— de Beauchamp, Bull. Soc. Zool. France 38 (1914): 326. 
Furcularia najas Dujardin, Hist. Nat. Zooph. (1841), p. 650. 
? Notommata pot\amis Gosse, Jour. Royal Micr. Soc. 1887 : 365, PI. 8, 
fig. 10.— Hudson and Gosse, Rotifera, Suppl. (1889), p. 21, PI. 31, 
fig. 9. 
? Notommata najas thermalis Issel, Atti Soc. Ligustica 17 (1906): 29, 
PI. 1, figs. 7, 8. 
Eosphora ehrenbergi Weber, Weber and Montet, Cat. Invert. Suisse, 
fasc. 11 (1918): 123. 
The body of this species is broad; nearly parallel-sided and 
very robust; its greatest width, at mid-length, is fully one third 
of the total length. The integument is comparatively rigid and 
the outline very constant. The entire body is tinted a light 
orange-brown. 
The head is short and broad; its width is but little less than 
the greatest width of the abdomen. The neck is as wide as the 
head, but somewhat shorter; there is a rather indistinct trans¬ 
verse fold between head and neck, as well as between neck and 
abdomen. The abdomen is very broad and nearly parallel-sided 
for the greater part of its length; it is rounded posteriorly and 
terminates in a short, very broad tail with two small lateral lobes. 
The foot is cylindrical, two-jointed, and fairly long. The toes 
are rather short, about one eighteenth of the total length, coni¬ 
cal, and acutely pointed; the ventral edge is straight and the 
dorsal slightly curved. 
The antennae are small setigerous pimples in the normal po¬ 
sitions. 
The corona is frontal and consists of a marginal wreath of 
cilia, interrupted dorsally and passing in a curve to a lateral, 
