A treatise on zoology . trichia ; , ^ent^al (liypochordal)dermatrichia ; ho, haemal spine ; hy, hypwrsd ; no., neural spine ; g, detached spine (or radial). (gephyrocercal); but the homocercal tip is merged, in Gadidae,with portions of the dorsal and anal fins contributing to form apseudocaudal, having the outward appearance of a diph3^cercal tail fin, however, differs considerably in internal structurefrom that of all other fish ; it has a large dorsal lobe similar to theventral lobe, and like it supported by the prolongations of a largenumber of vertebral arches (Figs. 509, 510).
A treatise on zoology . trichia ; , ^ent^al (liypochordal)dermatrichia ; ho, haemal spine ; hy, hypwrsd ; no., neural spine ; g, detached spine (or radial). (gephyrocercal); but the homocercal tip is merged, in Gadidae,with portions of the dorsal and anal fins contributing to form apseudocaudal, having the outward appearance of a diph3^cercal tail fin, however, differs considerably in internal structurefrom that of all other fish ; it has a large dorsal lobe similar to theventral lobe, and like it supported by the prolongations of a largenumber of vertebral arches (Figs. 509, 510). Division first vertebra is normally joined to the skull. Family Macruridae. Modified deep-sea fish in which the trunkbecomes .shortened, the tail tapers to a filament, the dentition becomes GADIFORMES reduced, the mouth, which is protractile, diminishes in size, and a pro-minent rostrum develops above it (Fig. 511). The rostral process is sup-ported by the enlarged nasals and preorbitals. The eyes are very Fig. austndis, Rich. (After Guuthcr.) Au anterior spinous ray is found in the dorsal of the sub-family Mac-rurinae. There is a specialised larval form {Krohnius) with filamentousextensions of the pelvic fins.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology
