Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . brr, fig. 1, is directed outward, segmented and turned back in its outer segment; the third,bra, and the following show the outer segment firmly attached to the base of the pectoral while the innersegment of the ray, bre, is broadened and enlarged into a sort of hammer-shape, solidly attached to theceratobranchial and the epibranchial at their junction, and to the outer stay or segment, bra. Theepitropeal cartilages, supratropeal and subtrojieal, ens, form regular series above the arches, and irregularone
Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . brr, fig. 1, is directed outward, segmented and turned back in its outer segment; the third,bra, and the following show the outer segment firmly attached to the base of the pectoral while the innersegment of the ray, bre, is broadened and enlarged into a sort of hammer-shape, solidly attached to theceratobranchial and the epibranchial at their junction, and to the outer stay or segment, bra. Theepitropeal cartilages, supratropeal and subtrojieal, ens, form regular series above the arches, and irregularones below them. The extrabranchials, sbr, supra and sub are large. The mesopterygia are muchreduced or fused with the girdle, pet. The anterior km, in fig. 1, shoidd be sp. Changes in thestructure of the gills leading towards Mobula are seen in the Rhino])teridae; the inward section of eachlamina takes on more of the functions of protection and of pro]5elling the food toward the stomach whilethe outer section is more concerned in purifying the blood, see Plate 59, fig. 9-10. o (3. o> :oo oo
Size: 1774px × 1408px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1913
