146 MESSRS. ALDER AND HANCOCK ON 
EXPLANATION OF THE PLATES. 
PLATE XXVIII. 
Figs. 1, 2. Doris ellioti. 
Fig. 3. Doris pardalis. 
Figs. 4, 5. Doris concinna. 
Fig. 6. A few of the tubercles of the same. 
Figs. 7, 8. Doris fragilis. 
Fig. 9. Doris castanea. 
Figs. 10, 11. Doris osseosa. 
Fig. 12. Gontodoris modesta. 
PLATE XXIX. 
Figs. 1, 2. Doris formosa. 
Fig. 3. Branchial opening of the same, showing the marginal folds. 
Fig. 4. Doris striata. 
Figs. 5, 6. Doris carinata. 
Fig. 7. Chromodoris zebrina. 
Figs. 8, 9. Doridopsis tuberculosa. 
Fig. 10. Dorsal tentacle of the same. 
Figs. 11, 12. Trevelyana bicolor. 
PLATE XXX. 
Figs. 1, 2. Doris areolata. 
Fig. 3. A dorsal tentacle of the same. 
Fig. 4. Doris rusticata. 
Fig. 5. A dorsal tentacle of the same. 
Figs. 6, 7. Doris tristis. 
Fig. 8. Doris apiculata. 
Figs. 9, 10. Doris funebris. 
PLATE XXXI. 
Figs. 1, 2. Doridopsis rubra. 
Fig. 3. Doridopsis fusca. 
Figs. 4, 5. Doridopsis gemmacea. 
Fig. 6. A dorsal tentacle of the same. 
Fig. 7. Spawn of the same. 
Figs. 8, 9. Doridopsis pustulosa. 
