250 SCIENTIFIC RESULTS OF THE 
mm., by a diameter of 1.0 to 1.5 mm. The contents of the stomach 
and of the intestine indeterminable animal matter, mixed with an 
enormous quantity of different and partly very handsome forms of 
Diatomacee, with some polythalamia and some small copepoda, and 
fragments of the same. ; 
The liver about 9-9.5 mm. long by a breadth (at the forepart) of 
6.5-5.5 and a height of 6.25-6.0 mm.; the posterior half somewhat 
pointed, the anterior notably flattened and excavated on the right side ; 
around the cardia the liver appeared naked (not covered by the her- 
maphroditic gland) of (greenish) gray color, in sections it was yel- 
lowish. 
The ramifications of the aorta nearly as in the typical Doridide,' 
the root of the posterior aorta still longer and the Art. syringis renalis 
stronger and more ramified. The sanguineous gland yellowish- leant 
rather flattened, of irregular triangular form, lobulated, about 3.5 mm. 
long. 
The renal chamber large ; the yellowish-white renal syrinx about 
0.75 mm. long, its tube somewhat more than twice as long, imme- 
diately continuous with the tube on the floor of the renal chamber. 
The hermaphroditic gland easily distinguishable from the liver 
through its more whitish color; the secondary (ovigerous) lobes rather 
small; in the lobes zoUsperms and large odgene cells. The anterior 
genital mass of plano-convex heart-shape with the point down and 
backwards; the length about 5.0 mm. by a breadth of 4.0 and a height 
of 5.0mm. The ampulla of the very thin and white hermaphroditic 
duct resting on the upper posterior part of the mucous gland, yellow, 
short and thick (4.0 mm. long by a diameter of about 1.25 mm. form- 
ing a simple ansa. The vas deferens yellowish, strong, resting upon 
the upper side of the genital mass with its large coils and freely de- 
scending before its anterior margin to the penis, constricted about the 
(fig. 9¢) middle of its total length (30.0-35.0 mm.). ‘The penis forming 
the end of the spermatoduct somewhat thicker, about 2.0 mm. long, 
somewhat curved ; its lower part hollow, the rest solid and prominent 
in the cavity of the former as a cylindrical glans of the length of about 
06mm. The glans with about ten series of yellowish hooks, which 
from a rather large basis raised to the height of about 0.04 mm.; the 
continuation of the armature reaching through the interior of the glans 
and of the spermatoduct nearly up to the stricture of the last, but the 
1 Cf. my Malacolog. Unters. (Semper, Philipp.) Tab. XLVIII, fig. 11. 
