260 SCIENTIFIC RESULTS OF THE 
of the intestine rather wide, its curve reaching to the bulbus pharyn- 
geus. The liver about 5.0 mm. long by a breadth of 3.5 and a height 
of 3.25 mm. ; the form conical, the posterior end rounded, the anterior 
much broader, flattened and adjoining another flattening on the infe- 
rior part of the right side of the organ ; the color was yellowish. 
The sanguineous gland of quadrangular form, of a diameter of about 
1.5 mm., whitish. 
The hermaphroditic gland with its yellowish-white lobes covering 
nearly the whole surface of the liver: in the lobes large oigene cells. 
The anterior genital mass of the length of about 4.0 mm. by a height 
of 3.0 and a breadth of 1.5mm. The ampulla of the hermaphroditic 
duct resting on the inferior margin of the genital mass, whitish, 
straight, of the length of 3.0 mm by a diameter of about 0.5 mm. 
At the anterior end of the ampulla a flattened body (prostate) that 
freely projects before the anterior margin of the rest of the genital 
mass ; it was of about the same length as the ampulla, but nearly twice 
as broad; the cavity of the organ rather large and the walls rather 
thin. The prostate slopes gradually inte the thin but strong spermato- 
duct, which is about 6.0 mm. long. and terminates in the penis, which 
was short, conical (fig 8a, 9), about 0.75 mm. long, and terminated 
in asomewhat flexible, yellowish glans (fig. 8, 9, 14), of the length of 
about 0.37 mm. by a diameter at the base of about 0.09, and at the 
point of 0.037 mm.; through the largest part of its length it was 
covered with (in all about twelve) series of small chitinized crests, 
which did not surpass the height of about 0.0025 mm. (fig. 14); the 
armature only continued through a short part of the interior of the 
spermatoduct. The spermatotheca spherical; the spermatocysta pyri- 
form, filled with sperma. The cordate mucous gland whitish and 
yellowish-white (fig. 8d). 
This: species approaches to the Pol. Lessoni?, but seems even dif- 
ferent in color from that and the other Atlantic forms, and also differs 
in the slight development of the frontal veil and of the lateral crests of 
the back, as well as in the number of the external plates of tongue, 
and! in the nature of the armature of the penis. 
1 The armature of the penis of Polyc. guadrilineata (hitherto the only 
species in which an armature has been described) as figured by Friele and 
Hansen (1. c. Tab. II, fig. 3) is very different from that of the Pacific spe- 
cies, and that difference has been confirmed by my examination of typical 
specimens, 
