Fig. 3. Dorsal view of the buccal mass*
4. Side view of the tongue.
5. A portion of the same more highly magnified.
6. A portion of the same seen from above.
7. Buccal mass with salivary gland:— a, side view of the buccal mass; b, oesophagus; c,
salivary gland; d, duct of the same; e, accessory salivary gland f } channel of the
mouth.
8. A portion of the accessory salivary gland more highly magnified.
9. Two of the sacs of the same, increased in size.
10. A single sac of the same, still more highly magnified, exhibiting the nucleated cells and
the vessels ? leading from them (the cells on the under side are not shown.)
11. Three of the nucleated cells with the vessels attached.
12. A lateral view of one of the smaller branchial processes, as seen in the compressor of the
microscope.
13. A transverse section of one of the larger branchial processes showing the complicated
structure of the gland:—a, central duct.
14. A single branch of the same more highly magnified:—a, central duct; b, b, blood
passages.
15. Generative organs.
16. Cerebral ganglions and nerves:—a, upper ganglions j b, b, lateral or under ganglions;
c, buccal ganglions ■, d, d, ganglions of the dorsal tentacles (olfactory ganglions;) e, e}
eyes} ƒ, f } auditory capsules.
17. Eye of D. coronata.
18. Auditory capsule of the same.