476 Wisconsin Academy of Sciences, Arts, and Letters. 
The body is short, stout and gibbous dorsally. The head is rather 
short, very broad, slightly deflexed and oblique anteriorly. The 
neck is not very strongly marked. The abdomen is short and very 
broad; the dorsal edge is strongly convex. The lorica is relatively 
firm and the plates well marked; the lateral clefts are narrow an¬ 
teriorly and increase very slightly in width towards the posterior 
end. The foot is very short and broad; the small tail reaches 
nearly to the posterior end. The toes are short, rather slender, 
slightly decurved and taper gradually to acute points; their length 
is about one fifth of the total length. The foot glands are small 
and pyriform. 
The corona is oblique and somewhat convex without projecting 
lips. 
The mastax is large and of the normal type; the fulcrum is 
slightly expanded at the posterior end and the manubria long and 
strongly crutched. The gastric glands are small. 
The ganglion is very long and saccate; no retrocerebral organ is 
present. The eyespot is frontal and consists of a somewhat diffuse 
cluster of very pale pigment granules. 
Total length 125-130/x; toes 22-25/x. 
Cephalodella glohata is very widely, but somewhat sporadically 
distributed and is not often found in large numbers. It resembles 
C. physalis, but the toes are different, the head is smaller and the 
eye is frontal; physalis has a cervical eyespot, is considerably larger 
and has relatively longer toes. 
CEPHALODELLA PORFICULA (Ehrenberg). 
Plate XXXIV, figures 1-3. 
? Bistemma forficula Ehrenberg, Abh. Akad. Wiss, Berlin (for 1831), 1832, 
p. 139; Infusionsthierehen, 1838, p. 449, pi. 56, fig. 2 .—Hudson and 
Gosse, Kotifera, 1886, vol. 2, p. 41; Suppl., 1889, p. 31, pi. 33, fig. 19. 
Furcularia forficula Ehrenberg, Infusionsthierehen, 1838, p. 421, pi. 48, 
fig. 5 .—Bartsch, Jahresh. Ver. Naturk. Wiirrtemberg, vol. 26, 1870, p. 
41.— Eckstein, Zeitsehr. Wiss. Zool., vol. 39, 1883, p. 375, pi. 26, fig. 44. 
— Hudson and Gosse, Rotifera, 1886, vol. 2, p. 41, pi. 20, fig. 1.— Kelli- 
COTT, Proc. Amer. Soc. Micr., vol. 10, 1888, p. 94.— Wierzejski, Eozpr. 
Akad. Umiej., Wydz. Mat.-Przyr., Krakow, ser. 2, vol. 6, 1893, p. 229.— 
Jennings, Bull. Michigan Pish Comm., No. 3, 1894, p. 17.— Kertbsz, 
Budapest Rotat. Faun., 1894, p. 31.— Skorikov, Trav. Soc. Nat. Kharkow, 
vol. 30, 1896, p. 293.— Weber, Rev. Suisse Zool., vol. 5, 1898, p. 473, pi. 
19, figs. 1, 2.— Stenroos, Acta Soc. Fauna et Flora Fennica, vol. 17, No. 
1, 1898, p. 132, pi. 1, fig. 29.-— Voigt, Forschungsber. Biol. Stat. Plon, 
