Subcaudal scales

The Subcaudalia (syn. Subcaudalen; singular Subcaudale, actually Scutum subcaudale ) are the enlarged horn scales on the underside of the tail in most snakes. They can be arranged in pairs or single row one behind the other. The Subcaudalia close to the anal ( anal shield ) to the area of the cloaca, ahead lies the Ventralia or belly scales.

As with all other scales is their shape, size and training is an important determining feature within the snake systematics.