21 
m. mouth. 
man. manubrium. 
mes. mesosarc. 
per. perisarc. 
r. c. radial canal. 
sub. subumbrella. 
t. tentacle. 
t. b. »tentacular bulb. 
v. velum. 
All figures are of Kinetocodium danæ n. g., n. sp. 
Fig. 1. Hyalæa (Diacria) trispinosa Les. with Kinetocodium danæ. Ventral 
view. The foot of the pteropod is partly retracted. On the middle part 
of the shell is seen a polyp without tentacles. — The type-specimen. 
— x 10. 
Fig. 2. A nutritive polyp. — X 30. 
Fig. 3. Longitudinal section of a hydranth. — x 120. 
Fig. 4. Transverse section of a hydranth at the level of the tentacles. — 
x 120. 
Fig. 5. Transverse section of the pedicel of a nutritive polyp. — x 120. 
Fig. 6. External view of a well-developed gonophore; the manubrium and 
the three tentacles are discerned inside the beil; two of the radial 
canals are indicated by double rows of nuclei. On the stolon are 
seen two very early developmental stages of gonophores. — x 120. 
Fig. 7. Longitudinal section of gonophore. — x 220. 
2—6—1921. 
