386 GILMAN A. DREW 
and the narrower elongated oral portion. in contact with the 
end of the conspicuous spiral filament of the ejaculatory ap- 
paratus (figs. 2 and 23 A CB). 
In the forming spermatophore the narrow end of the cement 
body, the hyaline core, (HC) is continued to the oral end of 
the spermatophore as a narrow cylindrical rod, which stains 
about the same as the material of the cement body. This fills 
the space inside the loops of the spiral filament and, oral to the 
spiral filament, the continuation of the lumen of the ejacula- 
tory apparatus. I take it from Racovitza’s figures and de- 
scriptions that this, which he calls the hyaline core, is persistent 
in the fully formed spermatophore of Rossia. In Loligo it is 
transient, disappearing, evidently by liquification, almost 
simultaneously with the completion of the formation of the 
spermatophore. The space it occupied remains as the lumen 
of the ejaculatory apparatus, which is probably filled with the 
liquid in the completed spermatophore. 
In spermatophores in process of formation and frequently 
in freshly stained fully formed specimens, the cement material 
can be seen to be spirally wound. There is a central core, evi- 
dently a continuation of the cylinder extending between the 
sperm mass and the cement body, which is continued as a nar- 
row cord the whole length of the hyaline core which extends 
orally from the cement body (figs. 23 and 23 A). In fully formed 
specimens the cement material usually does not show the spiral 
character plainly and the inner core may not be visible. 
The cement body is probably covered entirely by the inner 
membrane, but over the large aboral end, where it is likewise 
covered by the outer membrane and the inner tunic, and where 
these membranes are fused tightly together, it cannot be traced 
as a separate membrane. 
Over the narrow oral end of the cement body it is visible as a thin 
membrane which continues orally after leaving the cement body 
over the outer surface of the spiral filament. Still further orally, 
where there is no spiral filament, this membrane lies next to 
the lumen of the ejaculatory apparatus (fig. 2, 7M). Formerly 
it was in contact at this point with the hyaline core. 
