Harring and Myers—The Rotifers of Wisconsin. 619 
Their tips are bent rather abruptly toward the dorsal side, and 
the alulae are well developed. The fulcrum is a roughly triangu¬ 
lar plate, rounded posteriorly. The unci have three teeth, the 
ventral longest and the dorsal about half as long, while the middle 
tooth is intermediate in length. The first or ventral tooth is well 
developed; the basal two thirds of its length is fairly stout, 
straight, and cylindric, while the distal third is enlarged as a 
barb-like or sickle-shaped point. The second tooth is of the same 
form, but much more slender. The dorsal tooth has a very 
slender basal portion, about one half the entire length, and the 
terminal portion is of nearly the same size as the tip of the ven¬ 
tral tooth, but more curved. All three teeth are united by a thin 
lamella, extending to the curved tips. The manubria have a 
strongly developed, crescent-shaped ventral branch and a nearly 
straight median, or principal, branch, forming an angle of about 
45 degrees with the ventral branch. The dorsal branch is a thin 
lamella, slightly curved toward the median plane. The epipharynx 
is composed of two rod-like, obtusely bent pieces, whose inner 
ends meet in a straight line immediately behind the mouth, and 
two very thin, rhomboid lamellae with a slight double curvature. 
From the external angles of these lamellae radiate 12 to 15 
evenly spaced striae or very slender ribs. The inner sections of 
the epipharynx are very resistant to solvents, but the external 
lamellae are much less so; evidently they are only partly scleri- 
fied. 
The oesophagus is short and slender. Stomach and intestine are 
not distinctly separated. The gastric glands are moderately large 
and ovate. A large bladder is present. The ovary is of the nor¬ 
mal elongate-ovate form. The foot glands are small and discharge 
into a minute mucus reservoir. 
The ganglion is large and slightly alongate. The retroeerebral 
organ consists of a rather small, elongate, apparently ductless sac 
at the posterior end of the ganglion; it encloses the eye-spot and is 
nearly opaque on account of the numerous bacteroids contained, 
which are most abundant at the anterior end. 
Total length 350-400/4,; toes 10/4,; trophi 32/x long, 40/t wide. 
Lindia torulosa has not so far been found in the United States; 
we are indebted to Dr. P. de Beauchamp for the material from 
which this description has been made; it was collected in the 
Canal de Bourgogne at Dijon, France. As the description has 
been made entirely from preserved material, it may need modifi- 
