Harring & Myers—Rotifer Fauna of Wisconsin — II. 431 
angle curves downwards and the posterior angle towards the dorsal 
side; the unci are hinged near the dorsal angle of the anterior 
Inargin. There is no epipharynx and apparently no piston. 
The oesophagus is moderately long and slender. There is 
no constriction between the stomach and intestine. The gastric 
glands are large and strongly compressed laterally. The ovary is 
normal. The foot glands are very large, pyriform and somewhat 
compressed; they open into large mucus reservoirs, which extend 
almost to the tips of the toes. There is no bladder. 
The ganglion is very large and saccate. There is no eyespot and 
no trace of a retrocerebral organ. 
Total length 300-400/a ; toes 25-35/a ; trophi 36/a wide, 30/a long. 
Proales daphnicola is not very common; since first found by 
Thompson it has been recorded only by Murray from Scotland and 
by Myers from California; Mr. C. F. Rousselet sent us specimens 
collected at Totteridge, Herts, England. It is commensal or, more 
correctly, synoecious on Daphnids and, according to Murray, on 
oligochaete worms; it seems to obtain nothing but transportation 
from the host. 
PEOALES EEINHARDTI (Ehrenberg). 
Plate XVI, figures 6-10. 
? Vortcella succolata Muller, Anim. Inf us., 1786, p. 287, pi. 40, figs. 8-12. 
? Furcularia succolata Lamarck, Hist. Nat. Anim. sans Vert., vol. 2, 1816, 
p. 38. 
Furcularia reinhardti Ehrenberg, Abh. Akad. Wiss. Berlin (for 1833), 1834, 
p. 208; Infusionsthierchen, 1838, p. 420, pi. 18, fig. 4.— Dujardin, Hist. 
Nat. Zooph., Inf., 1841, p. 651.— Eichwald, Bull. Soc. Imp. Nat., Moscou, 
vol. 22, pt. 1, 1849, p. 529.— Daday, Ertek. Termesz. Korebol, vol. 19, No. 
17, p. 11, pi. 1, figs. 4, 13, 19-21, 27, 31.— Levander, Acta Soc. Fauna et 
Flora Fennica, vol. 12, No. 3, 1895, p. 33, pi. 2, fig. 15.— Voigt, Forsch- 
ungsber. Biol. Stat. Plon, vol. 11, 1904, p. 44; Siisswasserfauna Deutsch- 
lands, pt. 14, 1912, p. 103, fig. 191.— Lauterborn, Mitt. Pollichia, vol. 60, 
No. 19, 1904, p. 116.— Lie-Pettersen, Bergens Mus. Aarbog, 1905, No. 
10, p. 31, pi. 2, fig. 8.— Murray, Trans. Eoyal Soc. Edinburgh, vol. 45, 1906, 
p. 180.— Sachse, Arch. Hydrobiol., vol. 9, 1914, p. 498, fig. 1.— Hauer, 
Mitt. Bad. Landesver. Naturk., Freiburg i. Br., new ser., vol. 1, 1921, p. 184. 
7 Distemma marinum Ehrenberg, Infusionsthierchen, 1838, p. 450, pi. 56, 
fig. 4.— Hudson and Gosse, Rotifera, Suppl., 1889, p. 32, pi. 33, fig. 16. 
f Endesma (marinum) Ehrenberg, Infusionsthierchen, 1838, p. 450. 
? Furcularia gammari Plate, Zeitschr. Wiss. Zool., vol. 43, 1886, p. 236, pi. 
7, fig. 42; Hudson and Gosse, Rotifera, Suppl., 1889, p. 61, pi. 34, fig. 8. 
