A. JE. Verrill — Marine FlcuiarUtns of New' JiJngland. 505 



at low-water mark, April, 1872 (A. E. V.), var, grisea. Beverly, 

 Mass. (Girard), var, 'Warrenl. 



This species is not abundant on our coast. I have taken only a 

 single specimen of a dark green variety (referred doubtfully to this 

 species) at Eastport, Me., and Grand Menan, N. B., during many 

 seasons spent in studying the fauna of that region. 



Our species appears to vary widely in color, but I am unable to 

 find other differences sufficient to indicate more than one species. 

 Nevertheless, it may be well to designate the principal color- 

 variations as varieties until better known, especially as they have 

 already received specific names. 



Variety, "Warreni Girard.* 

 Color red or reddish brown. 



Variety, grisea Verrill. 



Planaria grisea Verrill, Invert. Vineyard Sd., p. 633 [339], 1873. 



Color grayish, yellowish or greenish above, with a median whitish 

 streak. PI. xli, figs. 9-9^. 



The original description is as follows: — 



" Body elongated and usually oblong in extension, often long 

 oval or somewhat elliptical, obtusely pointed or rounded posteriorly; 

 head subtruncate in front, often a little prominent in the middle; 

 the angles are somewhat prominent, but not elongated. Ocelli two, 

 black, each surrounded by a reniform white spot. Color yellowish 

 green or grayish, with a central whitish stripe in the middle of the 

 back, surrounded by darker; head margined with whitish. Length, 

 in extension, 12"^"'; breadth, 3™"." 



Watch Hill, R. I., under stones, between tides (April, 1872). 



This species is referred to that of northern Europe with some 

 doubt, owing to our imperfect knowledge of the internal anatomy 

 of both forms. Externally they appear to agree closely. 



* I should retain this name with some hesitation for this form, from the original 

 description alone, which is too indefinite to enable one to be certain as to its applica- 

 tion to a species of this genus, as now defined. But as Stimpson had Girard's 

 original drawings for examination, and gave a more precise definition to this genus, 

 it must be presumed that F. Warreni, the type, co.nforms to his definition. 



There is a peculiar red planarian, on our coast (see pi. xl, fig. 9), which agrees well 

 with Girard's description, so far as it goes, but my specimens had no distinct ocelli 

 This is tlie species referred to F. Warreni by me in the Report on Invert, of Vine- 

 yard Sound, p. G33 [3.39], 1873. Additional studies of fresh specimens are essential, 

 in order to identify it. 



