PLATE 1 
1 Stage 1. Stain: Weigert’s Iron haematoxylin, Leitz Achromat 6; Ocular I. 
2 Stage 2. Stain: Boraxcarmine. 3XI. 
3 Stage 3. Stain: Boraxcarmine. 3XI. 
4 Stage 4. Stain: Boraxcarmine. 3XI. 
5 Adult. Stain: Haematoxylin-eosin. 1XI, 
ABBREVIATIONS 
C.u.s. Canalis utriculo-saccularis M.n., Macula neglecta 
B., Brain M.s., Macula sacculi 
A.v., Auditory vesicle O., Otolith 
Lag., Lagena P.i., Pars inferior 
L.c., Lateral semicircular canal P.s., Pars superior 
A.c., Anterior semicircular canal S., Sacculus 
U., Utriculus 
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