240 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
+ the total length from the anterior end, tapering from here to rounded posterior 
extremity. Anterior end rounded, set off from the rest of the body by slight 
lateral indentations at the level of the eyes, 1. e. at about ;5 total length from 
the anterior end. No evidence of cephalic appendages. Mouth 4 total length 
from posterior end. Eye spots elongated, crescentic, facing outward and forward 
atan angle of 45° to the chief axis of the worm. Intestine of the simple 
Triclad type ; no fusion or anastomoses of the posterior stems. No indications 
of sexual organs; immature. Pigment located in spots of nearly uniform size, 
distributed uniformly over all parts of the body ; no clear areas surrounding 
eyes or at sides of head. Color of alcoholic specimen ochre-yellow. 
Planaria maculata Lerpy. 
Planaria maculata Lerpy, Proc. Acad. Nat. Sci. Philad., Vol. IIL. p. 251, 1848; 
Vol. V. pp. 225, 289, 1852; Ann. Mag. Nat. Hist. [2], Vol. I. p. 78, 1848; The 
Museum, Vol. I. p. 50, 1885. | Dizsine, Syst. Helminth., Vol. I. p. 205, 1850; 
Sitzungsb. Akad. Wiss. Wien, Bd. XLIV. Abth. 1, p. 499, 1862. Srirmpson, 
Proce. Acad. Nat. Sci. Philad., Vol. IX. p. 23, 1857. Srziiman, Zeitschr. wiss. 
Zool., Bd. XLI. p. 70, Taf. [V., Fig. 8, 1885. Woopworru, Bull. Mich. Fish 
Commission, No. 8. 1896. 
Dugesia maculata Girarv, Nord Amerik. Monatsbericht f. Naturw. u. Heilk., Phila- 
delphia, Bd. II. p. 3, 1851; Ann. Sci. Nat., Zool., Tom. XV. p. 181, 1898. 
One specimen from New Baltimore, Lake St. Clair, Aug. 20, 1893. Seven 
specimens ‘‘on leaves of Nymphea, Twin Lakes, Charlevoix, Aug. 8, 1894.” 
Four specimens from “ Utricularia washings, West Twin Lakes, Charlevoix, 
Aug. 13, 1894.” The specimens from the West Twin Lakes are much smaller 
than those from other stations, and three of these are mutilated at the anterior 
~end. I have found mutilations to be very common in Pl. maculata from many 
different localities ; they occur chiefly at the anterior end. It is possible that 
this species reproduces by transverse division, like Pl. subtentaculata! and Pl. 
fissipara.? 
It is not unlikely that the form described by Girard as PI. tigrina belongs 
to this species. Girard based his description on a single specimen, the anterior 
end of which was lacking ; his description, as far as it goes, agrees with the 
common varieties of Pl. maculata, a species which is the commonest of our 
fresh water Planarians. 
1 Zacharias, O., Zeitschr. f. wiss. Zool., Bd. LXIII. p. 271, Taf. IX. Figs. 8-11. 
1886. 
2 Kennel, J. v., Zool. Jahrbiicher, Abth. f. Anat. u. Ontog., Bd. III. p. 468, Taf. 
XVIII. Figs. 4, 5,19, 20. 1888. 
