Proceedings of the United States National Museum . Forearm (fig. 3). Plate 20. Bones of tiie liand. Flu. 1. Fourtla lett metacarpal. 2. Second plialanx, second right digit. 3. First pluilanx, second right digit. 4. First phalanx, first right digit,o. Third left metacarpal. 6. Second left metacarpal. 7. First riglit metacarpal. Plate 21. Lacrimals (figs. 1 and 2). Baleen plate from near middle of series (fig. 3). Plate 22. Tympanic and periotic bones. Fig. 1. Outer aspect, tympanic in place. 2. Superior aspect, tympanic in place. 3. Outer aspect, tympanic removed. 4. Inner aspect, tympanic remo
Proceedings of the United States National Museum . Forearm (fig. 3). Plate 20. Bones of tiie liand. Flu. 1. Fourtla lett metacarpal. 2. Second plialanx, second right digit. 3. First pluilanx, second right digit. 4. First phalanx, first right digit,o. Third left metacarpal. 6. Second left metacarpal. 7. First riglit metacarpal. Plate 21. Lacrimals (figs. 1 and 2). Baleen plate from near middle of series (fig. 3). Plate 22. Tympanic and periotic bones. Fig. 1. Outer aspect, tympanic in place. 2. Superior aspect, tympanic in place. 3. Outer aspect, tympanic removed. 4. Inner aspect, tympanic removed. «. c. Aqueduct of cochlea. Internal acoustic meatus. a. p. Anterior petrous process. m. Malleus. a. V. Aqueduct of vestibule. p. ap. Posterior apophysis of Beaure- c. f. n. Channel for facial nerve. gard. f. c. Cerebral orifice of facial canal. p. p. Posterior petrous process. f. m. Fossa for head of malleus. s. p. Sigmoid process. f. St. Fossa for stapedial muscle. st. Stapes. o U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. 66. ART. 9 Pollack Whale: Skull from Above For explanation of plate see page 13 U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. 66, ART. 9 PL. 2
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