634 Wisconsin Academy of Sciences, Arts, and Letters. 
Hudson lists Tetrasiphon liydrocora in the Supplement (p. 60) 
among the rejected genera; while admitting that 11 this may have 
been Copeus spicatus”,, he offers as excuses that “the trophi of 
C. spicatus are not bidentate; moreover no mention is made 
of the gelatinous covering in which spicatus is so often enveloped ’ \ 
As to the trophi, they are unquestionably bidentate, and in some 
localities the animal occurs without the jelly-case. 
Eosphora Ehrenberg 
eosphora najas Ehrenberg 
Plate LX, figures 7-11 
Eosphora najas Ehrenberg, Abh. Akad. Wiss. Berlin 1830 : 47, 84, PL 7, 
fig. 3; ibid, (for 1831) 1832 : 140, PI. 4, fig. 13; Infusionsth. (1838), 
p. 451, PI. 56, fig. 7.— Leydig, Zeitschr. Wiss. Zool. 6 (1854): 40, 
PL 3, fig. 29.— Hudson and Gosse, Rotifera, ,Suppl. (1889), p. 27, 
Pl. 33, fig. 9.— Bergendal, Acta Univ. Lundens. 28 (1892), sect. 2, 
no. 4, p. 91, BL 5, fig. 29.— Skorikov, Trav. Soc. Nat. Kharkow 30 
(1896): 297.— Lie-Pettersen, Bergens Mus. Aarbog (for 1909) 
1910 15 : 47.— Voigt, Susswasserfauna Deutschlands, pt. 14 (1912): 
115, fig. 220. 
Eosphora digitata Ehrenberg, Infusionsth. (1838), p. 452, PI. 56, fig. 8. 
—Tessin, Arch. Freunde Naturg. Mecklenburg 43 (1890): 145.— 
Hudson and Gosse, Rotifera, Suppl. (1889), p. 27, PI. 33, fig. 10. 
—de Beauchamp, Arch. Zool. Exp. IV, 3 (1905): CCXXV (notes et 
revue), figs. 1-3; ibid., IV, 6 (1907): 22, fig . 12 G; ibid., IV, 10 
(1909): 219, fig. XXXI, PI. 13, fig. 26.— Hirschfelder, Zeitschr. 
Wiss. Zool. 86 (1910): 217, Pis. 9-11, PL 12, figs. 10-25.— Lie-Pet¬ 
tersen, Bergens Mus. Aarbog (for 1909) 1910 : 47.— Voigt, Siiss- 
wasserfauna Deutschlands, pt. 14 (1912): 114, figs. 217-219.— Pen- 
ard, Rev. Suisse Zool. 221 (1914): 7, PL 1, figs. 3, 4.— Weber and 
Montet, Cat. Invert. Suisse, fasc. 11 (1918): 121, figs. 3i3, 34. 
Furcularia najas Dujardin, Hist. Nat. Zooph. (1841), p. 650. 
Furcularia digitata Dujardin, Hist. Nat. Zooph. (1841), p. 650. 
Notommata eosphora Bartsch, Jahresh. Nat. Wurttemberg 26 (1870): 
339. 
The body is large and robust; its greatest width is about two 
fifths of the total length. The integument is comparatively firm 
and the outline of the animal fairly constant. The entire body 
is usually of a light orange color. 
The head and neck are short and broad, and there is a well 
marked transverse fold between the head and neck, as well as 
