480 Wisconsin Academy of Sciences, Arts, and Letters. 
1904, p. 64.— Voronkov, Trudy Hidrobiol. Stants. Glubokom Oz., vol. 2, 
1907, p. 106.— EunnstrOm, Zool. Anz., vol. 34, 1909, p. 270.— Lie-Pet- 
TERSEN, Bergens Mus. Aarbog (for 1909), 1910, No. 15, p. 58.— 
Sachse, Siisswasserfauna Deutsclilands, pt. 14, 1912, p. 119, figs. 229, 
230.— Mola, Ann. Biol. Lac., vol. 6, 1913, p. 256.— Montet, Kev. Suisse 
Zool., vol. 23, 1915, p. 330.— Jakubski, Eozpr. Wiad. Muz. Dzieduszy- 
ckich, vol. 1, No. 3-4, 1915, p. 21.— Weber and Montet, Cat. Invert. 
Suisse, pt. 11, 1918, p. 138. 
Flagiognatcha lacinulata Skorikov, Trav. Soc. Nat. Kharkow, vol. 30, 
1896, p. 292, pi. 7, fig. 9. 
^ BiascMza taurocephalus Hilgendorf, Trans. New Zealand Inst., vol. 
31, 1899, p. 123, pi. 10, fig. 9. 
Diaschiza auriculata Barring, Bull. 81 U. S. Nat. Mus., 1913, p. 33; 
Proc. U. S. Nat. Mus., vol. 47, 1913, p. 528. 
The body is short, stout and somewhat prismatic; its greatest 
depth is just behind the neck. The head is very large, oblique an¬ 
teriorly and slightly deflexed. The neck is well marked. The ab¬ 
domen is nearly parallel-sided, slightly narrower at the posterior 
end. The lorica is fairly rigid and the plates distinct; the lateral 
clefts are narrow anteriorly and widen slightly and gradually to¬ 
wards the posterior end. The foot is short, stout and broadly 
conical; the fairly large tail is somewhat beyond mid-length. The 
toes are short, moderately stout and decurved, tapering gradually 
to acute points; their length is about one fifth of the total length. 
The foot glands are fairly large and pyriform. 
The corona is oblique and strongly convex with prominent, beak¬ 
like lips. 
The mastax is very large and of the normal type; the fulcrum is 
long and expanded posteriorly; the manubria very slender and 
strongly recurved. The gastric glands are small and usually tinted 
brownish-red in mature animals. 
The ganglion is very large and saccate; the eyespot is at the 
posterior end. The retrocerebral organ is absent. 
Total length 120-130/x ; toes 22-25/i,. 
Cephalodella auriculata is common everywhere in weedy ponds. 
In spite of its small size it is readily recognized by the peculiar, 
jerky manner of swimming. 
This species was first described by Muller under the name of 
Vorticella auriculata; in his Animalcula Infusoria the specific name 
was changed to lacinulata. seemingly under the impression that it 
was fashioned somewhat like the flowers of the “BluebeH”, hollow 
