Fig. 12 
Fig. 1 
Fig. 2. 
Fig. 8. 
Fig. 4. 
Figs. 5, 
Fig, 7. 
Fig. 8. 
Fig. 9. 
MUSEUM OF COMPARATIVE ZOOLOGY, 179 
Sextant of adult Z. groenlandica (oral view.) 
c. One of four meridional lines of lasso-cells (?) on the bell. 
d. Tubercles arranged in rows between the radial tubes, and situated 
on the under side of the bell. 
v. Velum. 
PLATE VI. 
. Tima formosa (young). 
AMabella gracilis. 
M. gracilis (side view). 
Otocyst of T. formosa (from young figured in Fig. 1). 
6. These two figures show how by fission two otocysts of T. formosa are 
formed from one. 
h. Point of constriction of walls. 
Liriope scutigera (adult female). 
Eudoxia Lessonii (side view). 
a. Primitive covering scale, 
5. Oil globule. This oil bubble is not the same as the float of Agalma. 
. Somatocyst. 
Tentacle, 
. Nectocalyx. 
. Tentacular knob. 
. Chymiferous tubes of the nectocalyx. 
Oil globule in somatocyst. 
Polypito. 
. Female sexual bells. 
The lettering in Figs. 8, 9, and 12 corresponds. 
Eudoxia Lessonii (dorsal view). 
^3 PARNO as 
Fig. 10. Mouth of Liriope scutigera. 
Fig. 11. 
Fig. 12. Diplophysa inermis. 
Otocyst of L. seutigera. 
PLATE VII. 
Young of Cyanea arctica, showing the filaments covering the upper surface 
of the bell, 
Aurelia flavidwula. 
Marginal sense organ of A. flavidula. View from the dorsal surface, 
a. Sense lappets. 
5. Sinnespolster. 
3%. Same as above from oral surface. 
Ephyra of C. arctica, Margin of the disk contracted. 
4^. The same with disk margin expanded, 
Y 
Marginal sense body of ©. arctica (young). 
Margin of the bell of Aurelia Havidula with lobules and tentacles. 
Portion of the disk of a young Cyanca in which tho sense organ and bundle 
of tentacles are shown (oral view). 
