Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . -ELOTVPE CO, E. Ft. FiSCwEft. DEL PLATE 63. PLATE 63. ISURIDAE. Fig. 1-6. IsuRUS PUNCTATTJS (Page 36). 1. Pectoral fin. 2. Pelvis and ventral or pelvic fins. 3. Vertebral column, second fin, and the anal fin. 4. First dorsal fin. 5. Caudal fina and vertebrae. 6. Scales from near the middle of the Hank. iViEM. Mus. COMP. 2o6l., Vol. 36- Plagiostomes. Plate E. H. Fischer, del. mELIOTVPE CO. i PLATE 64. PLATE 64. PRISTIOPHORIDAE and PRISTIDAE. Fig. 1. Pristiophorus japonicus (Page 246). Fig. 2-3. Pris
Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . -ELOTVPE CO, E. Ft. FiSCwEft. DEL PLATE 63. PLATE 63. ISURIDAE. Fig. 1-6. IsuRUS PUNCTATTJS (Page 36). 1. Pectoral fin. 2. Pelvis and ventral or pelvic fins. 3. Vertebral column, second fin, and the anal fin. 4. First dorsal fin. 5. Caudal fina and vertebrae. 6. Scales from near the middle of the Hank. iViEM. Mus. COMP. 2o6l., Vol. 36- Plagiostomes. Plate E. H. Fischer, del. mELIOTVPE CO. i PLATE 64. PLATE 64. PRISTIOPHORIDAE and PRISTIDAE. Fig. 1. Pristiophorus japonicus (Page 246). Fig. 2-3. Pristis microdon (Page 265). 1. Dorsal view. M. C. Z. 1045. 2. Dorsal view. M. C. Z. 302. 3. Ventral view. M. C. Z. 302. A species of the Antaeea is placed by the side of one of the Platosomia to give prominence to differ-ences between the two groups, which aiipear especially, among others, in tiie jaws, the branchial skeleton,the .shoulder girdle and the pectoral fins. Tlie girdle of tlic shark, fig. 1, is remotely attached to thevertebrae in its scapulary extensions; it is considerably arclied and the fins are placed rather behind itstransverse axis. In the ray, fig. 2, the girdle is firmly and superiorly attached to the vertebrae by meansof a scapular element and the fins are lateral and forward of the articulations as well as behind copula, hhij, is divided into sections, segmentetl, and dist inct from the cartilages behind it; in th
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1913
