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different in the posterior and anterior part of the body. In the 
posterior part they are small and narrow, irregular in shape, in the 
anterior part large and rounded (Figs. 50.a—c). This difference is 
so conspicuous that, if the two forms were not found in one and 
the same specimen, one would rather think them to belong to two 
different species. — In the anterior 
end some small, irregular, fene- 
strated plates (Fig. 51.a) occur, more 
or less sparsely. Numerous small 
lenticular bodies (Fig. 51.b) occur 
in the longitudinal muscle bands. 
In the tentacles numerous curved 
rods, slightly widened in the ends 
are found. (Fig. 51.c). 
Regarding the inner anatomy I 
may add the following observations 
to those given by Den dy. Calcar- 
eous ring consisting of 12 pieces of 
a square shape (Fig. 52); each of the 
dorsolateral interradii with two inter- 
radial pieces; the radial piecesperfor- 
ated. Oesophagus long and thin; no distinet stomach, a small swelling on 
the oesophagus in the specimens opened being due, evidently, to swal- 
lowed food particles. The loop of the intestine rather short. — Genital 
organs slightly branched ; the genital duet opens in the middorsal 
line, just behind the tentacles. I have found only one, mueh con- 
voluted stone canal. Polian vesicles 4—5 (in the type specimen 
Den dy found nine of them). Ciliated funnels very numerous, 
oceurring. in the middorsal and left dorsal interradii in the whole 
length of the body; they are very small, rather longstalked, slipper- 
shaped (Fig. 51.d), placed somewhat scattered. 
The anterior end of the body with nume¬ 
rous reddish spots, especially on the dorsal side. 
The small size of the eggs, ca. O.i mm, indi- 
cates that this species may probably have a 
typical Auricularia larva. 
The locality of the type-specimen isunknown. 
From the localities given here it may well be 
Vidensk. Medd. fra Dansk naturh. Foren. Bd. 79. 24 
Fig. 52. 
Badial and interradial 
of calcareoiis ring of 
Protankyra mxcinata. 
o o 
o 
o 
Q) 
b O 
Fig. 51. Calcareous deposits (a—c) and 
ciliated funnels (d) of Protankyra 
uncinata. a. Small plates from anterior 
part of body; b. lenticular bodtes 
from longitudinal muscles; c. rods 
from tentacles. a—c. ; d. ^^/i. 
