PLATE II. 
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Fig. 1. Clio striata. 
Fig. 1. View from the right side, the mantle, as also the heart and kidney, having been removed from that 
side ; a, fin j b, posterior lobe of the foot ; c, right tentacle ; d, pallial cavity ; e, buccal mass ; /, 
oesophagus ; g, one of the anterior gastric plates ; h, posterior azygous gastric plate ; i, intestine ; 
j, bile duct ; k, genital gland ; Z, genital duct ; m, accessory genital glands ; n, distal part of the 
genital duct ; o, genital aperture ; p, penis ; q, orifice of the penis ; r, position occupied by the 
liver. 
Fig. 2. Clio pyramidata. 
Fig. 2. Pallial gland, seen from behind. 
Fig. 3. Bulla ( Haminea ) hydatis. 
Fig. 3. Dorsal aspect, the mantle having been split and reflected to the left side ; a, cephalic hood ; b, para- 
podium ; c, point up to which the mantle has been divided along the dotted line ; d, pallial or 
hypobranchial gland ; e, gill ; /, lateral lobe of the mantle ; g, anus ; h, anal gland ; i, spermatic 
groove ; j, genital aperture. 
Fig. 4. Clio striata. 
Fig. 4. Pallial gland, seen from behind. 
Fig. 5. Clio acicula. 
Fig. 5. Stomach opened along the dorsal side ; a, oesophagus ; b, the eight small anterior gastric plates ; 
c, the four large plates ; d, the posterior azygous ventral plate ; e, commencement of the intestine. 
Fig. 6. Cuvierina columnella. 
Fig. 6. The cervical region opened from below; a, fin; b, posterior lobe of the foot; c, buccal mass; d, central 
nervous system ; e, oesophagus ; /, diaphragm. 
Figs. 7, 8. Clio pyramidata. 
Fig. 7. Anterior portion, seen from the left side; a, fin; b, posterior lobe of the foot; c, left tentacle; 
d, accessory genital gland ; e, anus ; /, anal gland ; g, intestine ; h, liver. 
Fig. 8. Ventral aspect of the heart and kidney, the latter having been reflected towards the left side; 
a, ventricle ; b, auricle ; c, pericardium ; d, kidney ; e, opening from the kidney into the pallial 
cavity ; /, communication between the kidney and pericardium. 
Fig. 9. Clio. 
Fig. 9. Transverse section through the central nervous system ; a, cerebral ganglion ; b, pleural ganglion ; 
c, visceral ganglionic mass ; d, otocyst with otoliths ; /, oesophagus. 
Fig. 10. Cuvierina columnella. 
Fig. 10. Central nervous system, seen from the left side; a, cerebral ganglion; b, pedal ganglion ; c, pleural 
ganglion ; d, left visceral ganglion ; e, otocyst ; f, cerebral commissure ; g, tentacular nerve ; 2, 3, 
visceral nerves ; left pallial nerve. 
Fig. 11. Action tornatilis. 
Fig. 11. Central nervous system, seen from the dorsal side; a, cerebro-pleural ganglion; b, pedal ganglion; 
c, right anterior visceral or supraintestinal ganglion ; d, abdominal or posterior visceral ganglion ; 
e, left anterior visceral or subintestinal ganglion ; /, genital (accessory) ganglion ; g, osphradium ; 
h, buccal or stomato-gastric ganglion; i, cerebral commissure ; j, cerebro-pedal connective; k, cerebro- 
pleural connective ; Z, pedal commissure ; m, second pedal commissure ; n, nerve to the penis. 
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