Column headings: _M. europæus._ C: Atlantic City, 1889, U.S.N.M. male, imm. _M. bidens._ D: Brodie House, Scotland, 1800, (Sowerby), male, adult.[a] E: Overstrand, England, 1892, (Southwell), female, adult. F: Dalgety, Scotland, 1888, (Turner), male. G: Hillville, Kerry, Ireland, 1864, (Andrews), male (?). H: Hevringholm, Denmark, 1880, (Reinhardt), female, adult. I: Rugsund, Norway, 1901, (Grieg), male, adult. J: Saltö, Sweden, 1885, (Aurivillius), male, young. K: Landenæs, Norway, 1895, (Grieg), male. L: Ostend, Belgium, 1835, (Dumortier), female, young. _M. densirostris?_ M: Annisquam, Mass., 1898, (Allen), female. Measurements. C D E F G H I J K L M mm. mm. mm. mm. mm. mm. mm. mm. mm. mm. mm. Total length 3,810 4,877 [b]4,828 4,597 4,572 [f]4,315 4,605 3,870 3,700 3,450 3,708 **Error unbreakable string:[b]12′6″ 16′ **Error unbreakable string:16′2″ **Error unbreakable string:15′1″ **Error unbreakable string:15′± **Error unbreakable string:=13′9″ **Error unbreakable string:15′1ࡩ″ **Error unbreakable string:12′8″ **Error unbreakable string:12′2″ **Error unbreakable string:11′4″ **Error unbreakable string:12′2″ Tip of upper jaw 470 ... ... [c]572 559 602 475 530 500 440 ... to blowhole Tip of upper jaw ... ... ... ... ... ... ... ... 520 ... ... to eye Tip of lower jaw [d]889 ... ... ... ... 1,098 1,000 970 930 910 ... to pectoral fin Back of dorsal [1,156] ... [e]1,803 ... ... [1,190] 1,590 1,280 [1,130] 1,150 ... to back of flukes Length of base 356 ... 349 324 ... 366 400 340 330 ... ... of dorsal fin Length of eye 25 ... ... ... ... 46 40 37 ... ... ... Length of mouth 248 457 432 ... 343 373 ... ... ... ... ... (upper jaw) Length of mouth ... ... 445 349 356 392 ... 320 320 ... 343 (lower jaw) Length of throat [f]173 ... 298 ... 254 248 ... ... 300 ... ... furrows Distance between 131 ... 241 229 178 157 ... ... 217 ... 254± throat furrows posteriorly