484 A. E. Verrill — Marine Planarians of New England. 



The male genital organs (PI. xliii, figs. 4a, \b) are close to the 

 posterior end of the stomach; there is a conspicuous, nearly round, 

 granular gland (A') ; at the anterior end of this, and partly concealed 

 by it, the seminal vesicle (/■) can be seen ; its form is pyriform or 

 rounded and cap-like, its length, as exposed, being usually greater 

 than its breadth; it consists of a central, and two lateral parts, which 

 are dilations of the vas deferens' the penis-sheath is stout-cylindrical 

 or somewhat expanded at the end; the penis (jt>) is long and slender, 

 cirriforra, coiled up more or less in contraction; the external open- 

 ing is often, in preserved specimens, raised on a conical elevation, 

 and sometimes the penis sheath is protruded as a clavate papilla. 



The female genital opening is usually situated in a broad funnel- 

 shaped depression of the surface in preserved specimens ; from this 

 opening the nearly cylindrical, thick-walled, tubular duct or vagina 

 (y) runs forward nearly or quite to the male orifice, where it bends up- 

 ward and then turns backward upon itself in the shape of a siphon ; 

 at the bend it expands somewhat, into a small vesicle ; but its distal 

 or dorsal portion is a narrow, somewhat moniliform tube (v'), there 

 being a series of slight constrictions along most of its length ; it 

 extends back beyond the external female orifice into a rather large, 

 elongated, somewhat flask-shaped, thick-walled spermatheca (s). The 

 first or ventral portion of the female duct (vagina, v) receives, on 

 each side, numerous slender ducts of the tubular shell-glands that 

 radiate outward from it in every direction, except directly forward. 

 The connections of the uterine sacs or oviducts were not observed. 

 Opposite the posterior end of the spermatheca there appears to be 

 a minute external orifice that communicates by a slender duct with 

 the spermatheca, but this connection was not fully demonstrated, 

 nor was it seen in every specimen examined; it may be the nephri- 

 dial duct. 



Gulf of St, Lawrence to Casco Bay, low-water mark to 60 fathoms. 

 Common at Eastport, Me., and Grand Menan, K B., 1862 to 1872, 

 at low-water mark under stones, in tide-pools, and at all depths down 

 to 40 fathoms, on stony bottoms. Halifax, N. S., 8 to 10 fathoms, 

 1877, Casco Bay, Maine, 10 to 12 fathoms, 1873, 



This species, as stated under L. variabilis, is closely related to the 

 latter and may prove to be only a larger and more fully developed 

 variety of it. The principal differences, externally, are the larger, 

 broader, and more robust body, and the relatively smaller and much 

 less conspicuous ocelli. The color is variable in each and not essen- 

 tially different, unless the small white specks of the present species 



