Related Clues:

• Missouri, e.g.
• Hudson, e.g.
• Dinosaur, e.g.
• Snake, for one
• One that sheds
• Water under the bridge
• Tributary
• Herpetologist's subject
• See 32-Across
• Banks hold it
• Basilisk or boa
• Tombigbee or Pee Dee
• See 27-Down
• Cold-blooded one
• Viper, for one