absence of horny shields, [325]

Sphenodon, [288], [290], [305], [306], [432];

S. punctatum, [293], [294];

skull, [295];

cervical vertebrae, [297];

habits, [298] f.

Sphenophryne, [225], [227]

Sphenosaurus, [82], [287]

Spiny-tailed Lizard, [524] f.

Spiracle, development, [45]