WOODWORTH: TURBELLARIA 243 
Microstoma lineare OrrstED. 
Microstoma lineare OBERSTED， Forsag til en ny Class. af Planariz, etc., p. 566, Kopen- 
hagen, 1848. SILLIMAN, Zeitschr. f. wiss. Zool, Bd. XLI. p. 51, 1885. 
Woopworrn, Bull. Mich. Fish Commission, No. 8. 1896. 
Microstoma commune GrRARD, Ann. Sci. Nat., Zool., Tom. XV. p. 218, 1893. 
“Old Channel, Round Lake, Charlevoix, July 13, 1894. Numerous. In 
chains of 2-4, solitary individuals rarer.“ 
One broken stock of four individuals from * Utricularia washings, West Twin 
Lakes, Charlevoix, Aug. 13, 1894.” 
*Microstoma variabile Lripy. 
Microstomum (Hustomum) variabile Lutpy, Proc. Acad. Nat. Sci. Philad., Vol. V., 
p. 350, 1852. Woopworrn, Bull. Mich. Fish Commission, No. 8. 1896. 
Microstoma philadelphicum Grarr, Monographie d. Turbell., p. 252, 1882. 
Anatocelis variabilis Dinsine, Sitzungsb. Akad. Wiss. Wien, Bd. XLV. Abth. 1, 
p. 236, 1862. 
** Alge-culture from shore, Charlevoix, July 24, 1894. One specimen, chain 
of four individuals." 
Microstoma caudatum Leıpr. 
Microstomum (Eustomum) caudatum LH, Proc. Acad. Nat. Sci. Philad., Vol. V. 
p. 350, 1852. SiLLimaN, Zeitschr. f. wiss. Zool., Bd. XLI. p. 51, Taf. IV. 
Figs. 4-6, 1885. Woopworrn, Bull. Mich. Fish Commission, No. 8. 1896. 
Anatocelis caudata DirsivG, Sitzungsb. Akad. Wiss. Wien, Bd. XLV. Abth. 1, 
p. 236, 1862. 
Eustoma caudatum GHRARD Ann. Sci. Nat., Zool., Tom. XV. p. 219, 1898. 
Two specimens from “ Utricularia washings, West Twin Lakes, Charlevoix, 
Aug. 13, 1894.” Anterior end not obtusely rounded, but terminating i: 
A 
hen; rounded eonteal projection Thil prominent, narrow, bostes? 
himen ds a stock eousistin 
har } imal E 12 " 
distinct tidividaals. The dune 
specnuen showed slight additional 
eonstrietious, Ludivative of a third generation. 
CAMBRIDGE, Mass., February, 1896. 
