www.specimenshells.net SPECIMEN SHELLS MYTILLIDAE Musculus Substriatus Musculus Substriatus 26mm Musculus Substriatus 27mm Musculus Substriatus 28mm Musculus Substriatus 27mm Musculus Substriatus 30mm Musculus Substriatus 23mm Musculus Substriatus 23mm Musculus Substriatus 27mm		Musculus Substriatus 26 mm - F++ 27 mm - F++ 28 mm - F++ 27 mm - F++ 30 mm - F++ 23 mm - F++ 23 mm - F++ 27 mm - F++