Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . :.?, ^m> u. e. K. Fischer, del. HELIOTVPE CO, PLATE 55. PLATE 56. ANTERIOR VERTEBRAE. Fig. 1. Callorhynchus TRiTORis. Z. 173. Fig. 2. Chimaera Z. 3. Pristis microdon. M. C. Z. 302 (Page ). Fig, 4. Rhinobatus percellens. M. C. ( 278). Fig. 5. R.\ia erinacea. M. C. Z. 358 (Page 337). Fig. 6. Pot.\motrygon lati-CEPS. M. C. Z. 290 (Page 417). Fig. 7. Taeniura M. C. Z. 620 (Page 399). Fig. californicos. M. C. Z. 636 (Page 429). Fig. 9. Aetobatus n
Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . :.?, ^m> u. e. K. Fischer, del. HELIOTVPE CO, PLATE 55. PLATE 56. ANTERIOR VERTEBRAE. Fig. 1. Callorhynchus TRiTORis. Z. 173. Fig. 2. Chimaera Z. 3. Pristis microdon. M. C. Z. 302 (Page ). Fig, 4. Rhinobatus percellens. M. C. ( 278). Fig. 5. R.\ia erinacea. M. C. Z. 358 (Page 337). Fig. 6. Pot.\motrygon lati-CEPS. M. C. Z. 290 (Page 417). Fig. 7. Taeniura M. C. Z. 620 (Page 399). Fig. californicos. M. C. Z. 636 (Page 429). Fig. 9. Aetobatus M. C. Z. 677(Page 441). Fig. 10. Rhinoptera jussiedi. M. C. Z. 863 (Page 447). 1 and 2 show the condition of the vertebrae in the , how few of them are in-cluded in the consoHdation, the articulation of the erectile spine, and the condition of the notochord,without rings in Callorhynchus, fig. 1, with rings in Chimaera, fig. 2. Figures 3-10 are from among thelowest to the highest of the Platosomia. They indicate the gradually increasing number of the vertebraetaki
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1913
