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| | === Phallus === | | === Phallus === |
| | + | |
| | + | * Ventral proctodeum is modified and thickened into a single phallus. |
| | + | * Two pairs of fibrous tissue separated by a central trough. |
| | + | * Cannot be inverted (unlike lizards and snakes). |
| | + | * Highly vascular. |
| | + | * When inserted into the female cloaca it becomes engorged. |
| | + | * Semen is conveyed through the central sulcus. |
| | + | * A retractor muscle returns the phallus back into the cloaca. |
| | | | |
| | == Female == | | == Female == |
| | | | |
| | == Copulation == | | == Copulation == |