I'm going to check.. but off the top of my head I believe a dolphine was the enclosed tail rotor model sold in France (Maybe even made there)... now to go google foo it.
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EDIT: You are thinking of the Dauphin... the Eurocopter EC 155... with the enclosed tail rotor:
Eurocopter EC 155 - Wikipedia, the free encyclopedia Similar but not the same body. The wing stubs on the Bell 222 are the giveaway... those stubs enclose the landing gear on the Bell 222... .the Dauphin has the wheels in the fuselage and not stubs. And the Dauphin is bigger/longer than the Bell 222