ON NAUTILUS AND SOME OTHER ORGANISMS. ~~ 159 
actual evidence of fragmentation is to be obtained (Figs. 9— 
11). Only rarely are the rounded particles derived from the 
Fie. 9. Iie, IO): 
CART 
i 
, 
4 
i 
sab 
2 
Lee 
AT 
rear 
Fics. 9, 10, and 11.—Planocera discoides. Kgg-capsules. In Fig. 9 
one ovum has undergone fragmentation; in Fig. 10 two ova have undergone 
fragmentation; in Fig. 11 the remains of the fragmented particles are seen 
lying against an embryo which had already acquired cilia, but had not com- 
menced to rotate. Zeiss, 3 c, cam. lue. 
fragmentation of the original ova, to be seen floating about 
in those capsules in which the embryos are revolving. 
2. Cirripathes anguina.—From the reef off Ralum I 
obtained a fine specimen of this unbranched Antipatharian, 
upwards of 9 feet in length. It reached up close to the surface 
