Norwegian Solenogastres. 53 
folliculi, so that they do not correspond. At the foremost ends of 
the gonads the spermatids are produced. From a series of trans- 
verse sections taken through the left half of the anterior end of 
the animal, it appears that each male glandula opens by means 
of some internal ruptures where the spermatids first mature; they 
are emptied along the outer sides of the folliculi and carried into 
the narrow hermaphrodite canal extending dorsally of the glan- 
dulae (fig. 83). At the median side of this canal small ova are 
developed, each of one cell, on the median septum which separates 
the one gonad from the adjacent one. Only one simple layer of eggs 
was observed along each side of the septum. In its dorsal side 
the anterior aorta runs as usual. 
The coelomoducts (fig. 78) were simply organized, having a 
short ciliated pericardial duct and a wider shell gland, which for- 
med a simple tube without any special vesicula seminalis; its walls 
are thick throughout, constituted of secretory cells, which are 
cyanophilous in the anterior half of the tube and erythrophilous 
in the posterior one. The distal ends of both coelomoducts are united 
and beneath them there debouch a pair of copulatory organs (figs. 
86, 87, c.o.), forming vesiculae lined with low cubical secretory 
cells and containing each two spicula. 
The cloaca is comparatively small; its epithelium consists of 
cylindric cells. On its dorsal side, behind the pericardium, pro- 
jected a small papilla (fig. 78) which may perhaps be a sensory 
organ; no close examination of it was made. Nor could pericardium 
and heart be studied in view of the insufficient material. 
At the anterior end of the animal the following features of 
organization could be established (figs. 76, 77): The cirrose area 
is well separated from the mouth and situated in the upper half 
of the frontal end. Between the latter and the brain the anterior 
pedal gland was diffused at the sides of the pharynx; as usual 
it opened in the lateral diverticles of the ciliated crypt. The pharynx 
was surrounded by thick lips, containing in their interior a number 
of glandular cells. The pharynx constituted a wide sac contracted 
posteriorly into a short oesophagus leading directly backward 
into the intestine. The walls are muscular and attached to the body 
walls by means of radiating muscle fibres. No radula and no 
other differentiations of the pharynx are present. 
The intestine lacks a dorsal coecum and forms only a short 
diverticle towards the front; when the pharynx is retracted, this 
