of Heterodon, [409], [570];

in repose, [447], [587];

of ‘Lizzie’, [472], [478];

of Natrix, [569];

of the Lacertines, [571] (see [constriction]);

before striking, [573].

Cold; ss. affected by, [143], [159], [165], [584], et seq.

Cold-blooded, [56];

why so, [142], [146], [159] (see [hibernation], etc.).

Colours of ss., [10];