310 THE CEPHALOPODA 
for the lodgment of the branchial hearts (Fig. 273, cv). In the 
Octopoda the anterior division no longer exists ; the genital capsule 
is connected with the capsules of the appendages of the branchial 
hearts by long canals (Fig. 278, a.d), and even these are suppressed 
in Philonexis and Argonauta. 
In all Cephalopods each of the two divisions of the coelom is in 
open communication with the exterior. In the Dibranchia this com- 
‘neph Pp 
Vise per. 
View of the ventral surface of a female Nautilus, the mantle-skirt being completely reflected 
so as to show the inner wall of the sub-pallial chamber (compare with Sepia, Fig. 272). a, 
muscular band passing from the funnel to the integument; an, anus; b, valve of the funnel ; 
c, the mantle-skirt retroverted ; g.n, nidamental gland ; l.ov, aperture of the rudimentary left 
oviduct ; neph.a, aperture of the left anterior kidney; neph.p, aperture of the left posterior 
kidney ; olf, protective papilla of the left osphradium; r.ov, aperture of the right oviduct ; 
vise.per, left aperture of the viscero-pericardial sac ; #, post-anal papilla. (After Lankester.) 
munication is effected through the kidneys: there is a reno-peri- 
cardial canal on either side which opens into the cavity of the kidney, 
more or less close to its external orifice (Figs. 273, y; 277, r.p). But 
in Nautilus the pericardium opens directly to the exterior by means 
of two symmetrical orifices situated close to the posterior renal 
apertures (Fig. 276, visc.per) ; these must be regarded as the orifices 
of the reno-pericardial ducts which have migrated to the surface. 
In the Octopoda, in which the pericardial division of the coelom 
