KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 39. N:o l. 51 
from the front backwards, the first rings having the largest and most perfect hooks, 
while the posterior ones have the hooks defective, evidently in a stage of disappearance. 
The skin contains numerous glandular bodies, each provided with a somewhat 
elevated papilla, containing a pore and surrounded by a mass of minute, more or 
less irregular, cuticular plates, which are often replaced by an aggregation of dark 
granula (Figs. 122, 126—128). - The gigantic exceretory cells within the bodies have 
an elongate, triangular shape, and their narrower end is directed towards the pore. 
The glandular bodies, which are located in the posterior portion of the trunk, 
are rounded and lie closer together; among these the largest ones are to be found 
(Figs. 125—128). On the remaiming part of the trunk the bodies are considerably 
smaller, more scattered, and of an oval shape (Figs. 123—124). In front of the anus 
the proboscis has a girdle of rather large and crowded glands (Figs. 121—122):; ahead 
of this girdle a number of much smaller bodies are to be observed (Fig. 120). Be- 
tween the rings of hooks small scattered glands with a minute papilla are to be de- 
tected (Figos. 129. el. and Figs. 134—136. e.). 
I have, further, been able to verify the statements of KOREN and DANIELSSEN 
to the effect that there are two long segmental organs, that two pairs of retractors 
are present, the attaching points of the dorsal ones lying somewhat in front of those 
of the ventral and more robust ones, and thirdly that the longitudinal layer of 
museles forms, in the anterior half of the body, a continuous muscular membrane; 
but at the place of attachment of the segmental organs, the longitudinal muscles 
appear as separate, rather distant broad fascicles, which are about 24 in number 
(Fig. 18). These fascieles of museles anastomose with each other, and extend to- 
wards the posterior extremity of the body, where they become narrower and less 
conspiecuous”". As have been said above, I cam verify all these statements, except 
the number of the longitudinal musele-bands of the body-wall, which it was impos- 
sible to count, and also, the arrangement of these muscles posteriorly, which, accor- 
ding to my view, there form a continuous layer. With regard to the tranverse muse- 
les, these seem also to form bundles or fascieles in the proboscis, a fact overlooked 
by KOREN and DANIELSSEN. 
As to the intestinal spiral, I am obliged to rely totally on the statements of 
the two Norwegian investigators, because I have not had the opportunity of investi- 
gating it. Notwithstanding this, I must protest most earnestly against their views, 
when they say: "The organ of generation surrounds about the 2 posterior third parts 
of the intestinal spiral like a compact mass (see the general notice)". 
The idea is not altogether precluded, that a closer examination may prove 
that the animal in question is identical with another form of Physcosoma already 
known, e. g. the Ph. granulatum of LEvecKART, which seems to have a very wide 
distribution in the Mediterranean and the Atlantic. 
