Massachusetts General Laws Part III. Courts, Judicial Officers and Proceedings in Civil Cases (Ch. 211-262) Ch. 262, § 48

If more than one criminal process is served upon the same defendant on the same day, or if two or more prisoners are conveyed at one time by the same officer, by virtue of a mittimus, habeas corpus or state prison warrant, either on one process or on several processes, one traveling fee and one service only shall be allowed in conveying such additional prisoner or prisoners, in addition to the actual reasonable expense necessarily incurred.