644 Wisconsin Academy of Sciences, Arts, and Letters. 
salivary glands are rudimentary. The long and slender oesophagus 
starts high up on the mastax. The gastric glands are very small 
and rounded. Stomach and intestine are not distinctly separated. 
The ovary is fairly large and ovate in outline. A bladder of 
normal size and form is present. The foot glands are long and 
slightly club-shaped. 
The ganglion is large and saccate. The retrocerebral organ is 
limited to a small, apparently ductless sac at the posterior end 
of the ganglion. No true eye-spot is present; but the sac con¬ 
tains a large number of red pigmented granules, the greater num¬ 
ber being heaped up in a dense cluster against the posterior end 
of the ganglion, where the eye-spot would normally be found, 
and the rest scattered through the contents of the sac. 
Total length 350-400/x; toes 18-20/*; trophi 50/*. 
Eosphora gelida has been found in ponds around Washington, 
District of Columbia; it seems to occur only in the very early 
spring, at the time the ice is breaking up; it is then often found 
in considerable numbers. 
The elongate, slender body without projecting tail, the short 
toes and the absence of subcerebral glands sufficiently distinguish 
this sepcies from other members of the genus. In addition, the 
integument is marked with fine, closely spaced, longitudinal rows 
of minute circular dots. No other rotifer has similar markings, 
as far as known; the dots are not all of the same size, but vary 
in regular succession from large to small in approximately equal, 
short spaces; the lines of dots are straight and parallel, and there 
is only a small space between successive dots. Figure 6, Plate 
LX shows the arrangement. 
EOSPHORA MELANDOCUS (GoSSe) 
Plate LIX, figures 6-10. 
Furcularia melandocus Gosse, Jour. Royal Micr. Soc. 1887: 2, PL 1 , 
fig. 4.—Hudson and Gosse, Rotifera, Suppl. (1889), p . 27, PL 31, 
fig. 18.— Bilfinger, Jahresh. Nat. Wiirttemberg 50 (1894) : 47.— 
Voigt, Siisswasserfauna Deutschlands, pt. 14 (1912): 102, fig. 189. 
Notommata melandocus Harking, U. S. Natl. Mus. Bull. 81 (1913): 79. 
The body of this species is rather slender; its greatest width, 
at mid-length, is about one fourth of the total length. The in¬ 
tegument is soft and flexible, and the outline undergoes consid- 
