They're common in other parts of the country. But in New Jersey, the lowly corn snake and northern pine snake are rare enough to get state protection, and the ability to halt development projects in an already crowded state. The mere sight of the snakes _ common elsewhere in the country, and even kept as pets _ spurs government bureaucracy into action when it involves a piece of Garden State land slated for development. The sighting of three corn snakes caused enough additional requirements from the New Jersey Pinelands Commission that Bob Meyer recently gave up plans to develop a...