ON THE ANATOMY OF FISHES. 
225 
IX. — Description of the Plates. 
{Unless stated otherwise the Figures are of natural size. Figures relating to any 
species are not necessarily all drawn from the same specimen.) 
PLATE XL 
Figs. 1—6 and 8—24. — Macrones nemurus. 
Fig. 1. Lateral view of the skull and anterior vertebrae. 
Fig. 2. Vertical longitudinal section. 
Fig. 3. Ventral view of hinder part of skull and the anterior vertebrae ; 
X 2. 
Fig. 4. Lateral view ; X 3. 
Fig. 5. Vertical longitudinal section of the hinder part of the skull, and of 
the first and complex vertebrae ; X 3. 
Fig. 6. Posterior face of the skull and the post-temporal of the left side ; 
X 11. 
Fig. 7. Transverse section through the occipital region of the skull of 
Macrones aor ; X 2. 
Fig. 8. View of the cranial floor and auditory capsules, the roof of the skull 
having been removed ; X 3. 
Fig. 9. A similar view, but with the membranous labyrinth in sita, so as 
to show the relations of the latter to the Weberian ossicles ; 
semi-diagrammatic ; X 4. 
Fig. 10. The Weberian ossicles ; external lateral view , X 3. 
Fig. 11. The scaphium ; internal view ; X 3. 
Fig. 12. The Weberian ossicles ; ventral view ; X 3. 
Fig. 13. The tripus ; dorsal view ; X 3. 
Fig. 14. The tripus ; ventral view ; X 3. 
PLATE XII. 
Fig. 15. Lateral view of the head and anterior portion of the trunk. 
Fig. 16. Lateral view of the head and anterior portion of the trunk, after 
the removal of the external skin on the right side. 
Fig. 17. Ventral view of the air-bladder m ; X 2. 
Fig. 18. Ventral view of the air-bladder in situ; after the removal of its 
ventral wall ; X 2. 
Fig. 19. The dorsal and lateral walls of the air-bladder, showing the arrange- 
ment of the fibres forming the outer and inner strata of the 
tunica externa ; tlieir relations to the tri])odes, and the anterior 
