Fig. 
Fig. 
Hot 
Jl. 
67a. 
ELEDONE. Swill 
Left branchial heart, ae ing the branchial 
appendage or per icardial gland. From ventral 
surface. x 
Distal portion of lateral vena cava, showing 
two semi-lunar valves at entrance to branchial 
heart, and also apertures leading into venous 
appendages, and into the netw nae of vessels 
occurring in the spongy wall of the branchial 
heart. x 1. 
Mantle cut down ventral median line, and 
opened out flat. The left half is seen from 
the dorsal surface, after removing the skin. 
M.V. and MM. V, represent the two main 
pallial veins. x 4. 
Portion of arm, showing relation of main veins 
to the neta which ae ains the arm. x 2. 
Prarn “VIE. 
Ventral view of imk sac, after removal of 
epithelium covering visceral sac, showing 
visceral nerves, and nerve artery and vein of 
ink sac. x 3, 
Ventral view of ink sac, showing veins and 
arteries injected. The visceral and iridescent 
envelopes cut open and turned back. x 1. 
Heart from ventral surface, showing paired 
coronary veins. x l. 
Gill leaflet, showing network of arteries 
flowing into the main axial vessel which leads 
into the efferent artery. x 1. 
Portion of gill filament from external surface, 
showing terminations of venous vessels of the 
second order. x l. 
Portion of gill, from imner surface, showing 
main arteries and veins injected—-second inner 
filament cut away. Much enlarged. 
Right statocyst, from ventral surface. x 3. 
Statolith, from free surface. Much enlarged. 
Auditory capsules opened to show the statocyst 
attached to capsule by vascular network. x 1. 
