Norwegian Solenogastres. 29 
Genital organs. The hermaphrodite gland begins suddenly 
behind the dorsal coecum of the intestine; thus it does not extend 
so far anteriorly as is usual. Right from its front end it main- 
tains a wide section, and contains both kinds of products: the 
egos are formed on the almost straight median septum, and the 
sperma in the lateral parts of the genital tubes (fig. 42), which 
are open throughout between the formative stripes. The latter 
are repeatedly divided into sections which however do not ex- 
actly correspond to the dissepiments between the intestinal diver- 
ticula. From the posterior end of the tubes two efferent ciliated 
ducts debouch into the spacious pericardium, which in the spe- 
cimen sectioned contained mature eggs as well as spermatids. 
From the upper and lateral parts of the pericardium, outside 
the anus, the coelomoducts proceed; their proximal ends are 
somewhat winding (fig. 38), then descendent, and after some | 
windings turn towards the front. On the anterior side of the 
pericardium the proximal legs of the coelomioducts open each into 
a large tube with thick walls having a spongious appearance as 
they are constituted by a multicellular layer of high cells with 
large vacuoles. At the point where the ciliated canal debouches 
into this tube, some small vesicles project from its dorsal, as well 
as its ventral, sides; these vesicles are lined with a single layer 
of cubic, apparently mucous, cells. As to their position, these 
vesiculae are homologous with the vesiculae seminales in other 
Solenogastres. The spongious portion of the tube is followed 
by a large dilatation with ciliated walls, and from this there 
proceeds dorsally a large vesicle with thin walls and filled with 
spermatids, thus representing a receptaculum seminis. The sper- 
matids were all oriented with their heads towards the walls and 
their tails interiorly. At its lower end the said ciliated part 
opens by means of a short tube into the unpaired shell gland. 
The latter has thickened walls, especially in its lower and front 
part, and these are formed of elongated cells containing granula 
arranged as figured by Pruvor 1891, fig. 30, 31, and deeply dyed 
with red (eosin). The lumen was filled with spermatids. In 
regard to the presence of the large receptaculum seminis, this 
form of coelomoducts shows contormity with those of Pruvotina 
eryophila PELSENEER 1903, but the coexistence of this receptaculum 
and the vesiculae seminales as well as the presence of a ciliated 
portion at the front end of the distal leg are features which 
