Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . V^ X ^ r ^ \^^. •» IxV- ^C-ER a. nOETTCR OEi-- J PLATE 61. _J PLATE 61. PLATOSOMIA and ANTACEA. Fig. 1-3. Nabcacion MARMORATUS (Page 305). Fig. 4-5. Naecacion nobilianus (Page 310).Fig. 6. Narcine timlei (Page 300). Fig. 7-8. Chlamydoselachus anquineds (Page 14). Rhina caufornica (Page 253). 1-3. Various stages from De Sanctis, 1872. 4-5. Four fifths and natural length. M. C. Z. 1016. 6. One and two thirds natural length. 7-8. One and three fourths natural length. M. C. Z. 1285. 9-10. Five sixths natu
Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . V^ X ^ r ^ \^^. •» IxV- ^C-ER a. nOETTCR OEi-- J PLATE 61. _J PLATE 61. PLATOSOMIA and ANTACEA. Fig. 1-3. Nabcacion MARMORATUS (Page 305). Fig. 4-5. Naecacion nobilianus (Page 310).Fig. 6. Narcine timlei (Page 300). Fig. 7-8. Chlamydoselachus anquineds (Page 14). Rhina caufornica (Page 253). 1-3. Various stages from De Sanctis, 1872. 4-5. Four fifths and natural length. M. C. Z. 1016. 6. One and two thirds natural length. 7-8. One and three fourths natural length. M. C. Z. 1285. 9-10. Five sixths natural length. M. C. Z. 916. 11. Two and two thirds natural length. M. C. Z. 916. The first three figures illustrate the squaliforra raiiform and torpetliform stages socalled by DeSanctis (1872, AUi Reale accad., 5, pi. 1, fig. 3, G, 9.) In fig. 3 the forward extension of the pectorals, atthe sides of the batteries, is strongly marked while the lateral growth of the antorbital process ultimatelyforming the front of the disk has hardly begun; at this stage the latter merely forms a pad in front
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1913
