Pl. 35.—Lith. of D. W. Kellogg & Co. Hartford, Ct.Pl. 36.—Lith. of D. W. Kellogg & Co. Hartford, Ct.TRANSCRIBER’S NOTESP. [iv], changed “muscles” to “mussels” and “die” to “dye”.P. [71], changed “Clamp” to “Clam”.P. [154], changed “die” to “dye”.P. [174], changed “O. legatus.” to “C. legatus.”.Silently corrected typographical errors.Retained anachronistic and non-standard spellings as printed.