630 Wisconsin Academy of Sciences, Arts, and Letters. 
large; the glands terminate in a mucus reservoir extending into 
the cavity of the toe. 
The ganglion is very large and ovate; at its posterior end is 
the huge eye-spot, enclosed in a ductelss retrocerebral sac, ap¬ 
parently filled with a liquid, dark red, granular pigment. 
Total length 1000-1200/*; toes 40-48/*; trophi 56/* long, 90/* 
wide. 
Lindia fulva was found in great abundance in sheltered spots 
along the shore of Loon Lake, about one mile south of Eagle 
River, Vilas County, Wisconsin. It also occurs in a pond at 
Oceanville, near Atlantic City, New Jersey. 
This species is in bulk the largest of all known rotifers. The 
enormous gastric glands are sufficient to distinguish it from re¬ 
lated species. 
Tetrasiphon Ehrenberg 
tetrasiphon hydrocora Ehrenberg 
Plate LVII, figures 1-4 
Tetrasiphon hydrocora EUrenberg, Ber. Verh. Akad. Wiss. Berlin 1840: 
219; Sitzungsber. Ges. Naturf. Freunde Berlin (for 1839-1859) 
1912: 12. 
Notommata spicatia Hudson, Jour. Royal Micr. Soc. 1885: 612, PL 12, 
fig. 5. 
Copeus spicatus Hudson and Gosse, Rotifera (1886) 2: 29, PI. 16, fig. 2, 
PI. 30, fig. 7. — Stenroos, Acta Soc. Fauna et Flora Fennica 17 1 
(1898): 128. — Lucks, Rotatorienfauna Westpreussens (1912), p. 50, 
fig. 7. 
'Notommata hydrocora Harking, U. iS. Natl. Mus. Bull. 81 (1913): 78. 
The body is elongate and fusiform; its greatest width is less 
than one fourth of the total length. The integument is leathery, 
and the outline is constant. It is a very transparent species. 
No anterior transverse folds are present to indicate the limits 
of head and neck; the anterior margin of the head is rounded, 
and its width is about one half of the greatest width of the body; 
the neck is very slightly narrower. The abdomen is fusiform and 
slightly constricted at the base of the tail, which forms a rounded, 
blunt, dorsal projection. The foot has two joints, the basal one 
fairly large and robust, the terminal only half as wide and long. 
The toes are long, about one twelfth of the total length, conical 
