A treatise on zoology . Callorhynchtis antarcticus, Lac. (After Garman, from Dean.) A, dorsal aspect; B, ventral view of head. cerebrum, and the lateral-line canal opens only by a very narrow teeth have cutting edges, but no tritors in Rhinochimaera ; andtuberculated tritors in Harriotta (Fig. 141, F). Rhinochimaera, Garman, and Harriotta, G. and B.; Pacific (Fig. 145). HOLOCEPHALI 179 Incertae sedis. Family Ptyctodontidae. Scarcely anything but tlie dental plateswith tritors is known (Fig. 141, E). There appear to have been one pairin each jaw meeting at the symphysis and beak-like [

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A treatise on zoology . Callorhynchtis antarcticus, Lac. (After Garman, from Dean.) A, dorsal aspect; B, ventral view of head. cerebrum, and the lateral-line canal opens only by a very narrow teeth have cutting edges, but no tritors in Rhinochimaera ; andtuberculated tritors in Harriotta (Fig. 141, F). Rhinochimaera, Garman, and Harriotta, G. and B.; Pacific (Fig. 145). HOLOCEPHALI 179 Incertae sedis. Family Ptyctodontidae. Scarcely anything but tlie dental plateswith tritors is known (Fig. 141, E). There appear to have been one pairin each jaw meeting at the symphysis and beak-like [125].. Chinmera monsirosa, L. S ? Fig. 144. (After Garman, from Dean.) A, ventral, and_B, front \iew ofliead. Recently, however, Jaekel [242rt, 243(x] has described some dermalplates in association with Ptyctodont teeth {Rhamiyhodus). In this genus,according to Jaekel, the dermal armour forming a pectoral girdle points

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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology