INFUSORIA PARASITIC IN CEPHALOPODA. 199 
Fic. 14.—O. sepiolx. A large individual beginning to divide. Note 
persistence of nuclear net. (Sublimate alcohol, Mayer’s paracarmine. 
zs in. X 1.) 
Fie. 15.—O. sepiole, at end of division. The nuclei are still in the form 
ofanet. (Sublimate alcohol, Delafield. 3, in. x 1.) 
Fie. 16.—Giant ameeboid cell from liver of Sepia officinalis infected 
with Opalinopsis. Length 43. (Sublimate alcohol, Delafield. 3, in. x 1.) 
Fies. 17, 18, 19.—Degenerate forms of O. sepiole, with fragmented 
nuclei. (Sublimate alcohol. 17, Delafield; 18, 19, Grenacher’s alum-carmine. 
jz in. xX 1.) 
[With the exception of figs, 3, 8 (in part), and 9, the cilia are not shown.] 
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