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| === Phallus === | | === Phallus === |
| + | |
| + | * Two hemipenes |
| + | ** Paired, sac-like extensions of the cloaca. |
| + | * Lie within the ventral tail base. |
| + | * Each hemipene has a retractor muscle that extends from the tail vertebrae to the tip and sides of the hemipene. |
| + | * Large glands lie above the hemipenes. |
| + | * Hemipene retractor muscle and anal glands are all surrounded by a larger propulsor muscle. |
| + | * When the hemipene is engorged with blood, the propulsor muscle contracts. |
| + | ** Everts the hemipene. |
| + | * After engorgement has subsided, the retractor muscle contracts. |
| + | ** Inverts the hemipene. |
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| == Female == | | == Female == |