No. 6. — Report on the Turbellaria collected by the Michigan State 
Fish Commission during the Summers of 1893 and 1894. By 
W. McM. Woopwortu. 
TuHrouGH the kindness of Prof. H. B. Ward, the Turbellaria collected 
by the Michigan State Fish Commission during the summers of 1893 
and 1894 were sent to me for study, and the present report embodies a 
list of the species taken; it contains descriptions of some new forms. 
The collections, though few in number, contribute to the Turbellarian 
fauna of the United States four new species, three of which have never 
before been described.? It is much to be regretted that, in the absence 
of any data regarding the colors and shapes of the living animals, descrip- 
tions of these new species must necessarily be based upon the appear- 
ances of alcoholic material. Since the action of killing and preserving 
reagents tends to destroy or bleach the pigments and alter the shapes of 
the animals, such descriptions make subsequent identification difficult. 
The bibliographical citations in the synonymy include the original 
authority for the species, and all references to the species in the 
United States, as far as known to me. 
DENDROCGLIDA. 
Planaria simplex Wopwru. 
Figure 1. 
Planaria simplex Woopwortn, Bull. Mich. Fish Commission, No. 8. 1896. 
One specimen, “ Dredge Aug. 11, 1894, off N. Y. Point, Lake Michigan.” 
Length 4 mm., greatest diameter 1.8 mm. General shape ovate. Broadest at 
1 Contributions from the Zodlogical Laboratory of the Museum of Compara- 
tive Zoblogy at Harvard College, E. L. Mark, Director, No LXV. 
2 Recently described without figures in a preliminary abstract of this paper, 
pnblished in the Bulletin of the Michigan Fish Commission, No. 8, Lansing [Mich.], 
1896. 
VOL. XXIX. — NO. 6. 
