256 
J. STUART THOMSON. 
EXPLANATION OF PLATE 11, 
Illustrating Dr. J. Stuart 'J’hoiiison’s pnper on “ The Dorsal 
Vibratile Fin of the Kockliug (Motella).” 
Fig. 1. — Lateral view of Motella showing the dorsal vibi’atile fin. 
Fig. 2. — Dorsal view of Motella showing the vibratile fin. 
Fig. 3. — Vertical section of the vibratile fin and adjoining parts. The 
section passes through the fold of skin which connects the individual 
rays basally, tlie upper parts of the rays not being in the plane of section. 
ar. sp. Articulating sphere for the rays. cn. t. Connective tissue. 
d. sp. Dorso-spinal nerve branch, ep. Epidermis, em. Embryonal carti- 
lage. /(d. 1 -. Head of ray-carrier. i(r. /I). Horny fibres of the rays. lig. t. 
Ligamentous tissue. 1. m. Lateral myomeres, me. gl. Mucous glands. 
m. dp. Depressor muscle, pg. 1. Pigmented layer, ru. Jut. ace. Ramus 
lateralis accessorius, tc. Tactile nerve-endings, ta. Taste-buds. 
Fig. 4. — Terminal or taste-bud showing the sensory cells and the 
limiting membrane. 
Fig. 5. — Transverse section through a ray. e.p. Eijidermis. p>y- 
Pigmented layer, cn. t. Connective tissue, h.f. Horny fibres. 
