Section 51. No person shall sell, or represent for the purpose of sale, any lobster as a native lobster unless the same shall have been originally caught or taken in the coastal waters; nor shall any person so sell, or represent for the purpose of sale, any crustacean as a lobster unless the same is of the species known as Homarus americanus; nor shall any person so sell, or represent for the purpose of sale, any meat as lobster meat unless such meat is wholly from crustaceans of such species. Violations of any provision of this section shall be punished by a fine of not less than fifty nor more than five hundred dollars.