“STILL FOUND IN A LIVING STATE. 375 
assist to establish more and more firmly the animal nature of these 
creatures :— 
a. View of the side surface ( /3 6 cirrhi. 
b. View of the ventral or dorsal surface; a a, probably two aper- 
tures. 
ec. View of the expanded ventral surface when preparing for spon- 
taneous division. 
d. Smaller and younger specimen from the side. 
e. The same from the ventral or dorsal surface. 
In all these forms, very minute, slowly moveable, retractile cirrhi 
projected at.the sides, perceptible but with great trouble on account of 
their transparency, and at the extremities of the bands or pinne ap- 
peared to be apertures. The radiation of the cirrhi could be traced 
to the centre of the inner body (fig. a, 6, d). At the thick extremity 
appeared to exist near a two larger apertures (for the mouth and the 
eggs?). Locomotion by means of the cirrhi was very distinct, and 
brought to mind the feet of the Sea-stars. 
_ The green colouring in the interior filled two very minute curved 
laminez, around which were numerous vesicles of various sizes. 
In the dorsal and ventral view could be distinguished a saddle-formed 
very transparent body in the centre, which extended with two arms to 
the anterior two apertures and surrounded these. Of these places 
(a a, fig. 6) probably one was the mouth aperture, the other the aper- 
ture for the ovarium. 
In fig. 5 a. were observed three still larger (glandular ?) transparent 
bodies, which might easily be sexual glands. 
In fig. 5 ec. is the ovarium contracted out of its two-folded laminz 
into two agglomerated masses, and the very transparent saddle-formed 
body was not perceptible. 
Fig. 6. Ceratoneis Fasciola, a form not known as fossil, but nume- 
rous in the sea near Cuxhaven. 
a. Ventral or dorsal surface. 
6. Another similar form. 
e. Narrow lateral surface of the same species. 
The two vesicles of fig. 6, situated near the beak, appear to be com- 
parable to the sexual glands of the Navicule, the 4 to 6 vesicles in the 
centre round the mouth aperture might be ventral cells. In fig. a the 
cireular part appears to be comparable to a closing muscle around the 
mouth, as in fig. 5 6, a. The interior green parts are the egg-plates. 
Fig. 7. Ceratoneis Closterium, living near Cuxhaven, not known 
fossil. 
a. Ventral or dorsal surface with yellowish ovaria. 
6. The same view of another specimen with greenish ovaria. 
e. Somewhat narrower lateral surface of fig. a, without central line. 
Fig. 8. Eucampia Zodiacus, from Cuxhaven. 
a. A gradually-grown chain-like curve of eight individuals by im- 
perfect self-division, with the tendency to further increase in a cir- 
cular spiral. 
6. Two connected individuals. 
ec. The peculiar form of an individual from its broad side. 
The yellow agglomerated ovarium contains larger vesicles, perhaps 
large gastric cells. From fig. c it is evident that the ovarium originally 
