Norwegian Solenogastres. 33 
vessel, having its roof lamella, apparently, attached to the wall of 
the intestine. The pedal nerves run well outside the glandular 
stripes, and the lateral ones somewhat below the middle line of 
the body. 
In view of the very scanty material and the deficient state 
of the sections, no details could be established as to the intestine, 
the circumintestinal lacunae and the gonads, but is was observed 
that the latter contained mature genital products. 
The coelomoducts (fig. 46) issue from the posterior part of 
the pericardium on each side of the anus, and run forward till 
their proximal narrow legs debouch into the distal dilated ones. 
In front of this transition point the proximal leg is widened into — 
a group of numerous small vesiculae seminales filled with sper- 
matids. These vesicles have a thin epithelium. In the large distal 
leg (shell gland) the epithelium passes over into cylindric vacuol- 
ated cells containing grains stained with haematoxylin; farther 
back the cells have a granular content arranged in series along 
the cell walls and tinged red with eosin. Posteriorly the shell 
glands open separately into the front portion of the cloaca, which 
is, inferiorly, prolonged into a narrow tube penetrating far to- 
wards the front. 
At the terminal part of each shell gland there opens a string- 
shaped organ (figs. 49—52 c. 0.) situated on the median side of 
the gland and extending forward about as far, till it ends blindly. 
It represents a tube lined with cubic epithelium producing a 
gelatinous cuticular excretion. The end portion of this string- 
shaped organ, which seems to be an invagination from the cloaca, 
is muscular and attached to the body wall by means of muscular 
fibres. 
The gills are broad radiating folds of the lateral cloacal walls; 
they contain a lacunar tissue of the same nature as the paren- 
chyma filling the walls above the cloaca, and being in connection 
with the auricles of the heart. 
In the anterior end of the animal the following features of 
organization could be stated (fig. 45): 
The cirrose area (c. a.) is well separated from the mouth 
cavity at the sides of which it is somewhat widened. A pro- 
trusible proboscis leads into the pharynx which is cylindric and 
furnished with muscular walls lined with an epithelium of elevated 
mucous cells. Behind its median part it is furnished with an 
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