Are there any limitations or conditions attached to the power of the District Council to levy and collect taxes?
Yes, there are limitations and conditions attached to the power of the District Council to levy and collect taxes. According to the context provided:

1. The power is specific to autonomous districts only.
2. The types of taxes that can be levied and collected are strictly limited to those listed in the context (professions, trades, callings and employments; animals, vehicles and boats; entry of goods into a market for sale therein, tolls on passengers and goods carried in ferries; maintenance of schools, dispensaries or roads; taxes on entertainment and amusements).
3. Any regulation made by the Regional Council or District Council for levying and collecting these taxes must be submitted to the Governor for assent before it can take effect.