Definitions
from The Century Dictionary.
- noun In Balanoglossus and. Amphioxus, a downgrowth of the dorsal wall of a gill-slit more or less completely subdividing the latter: so named from its resemblance to the tongue of a jews'-harp.
Etymologies
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Examples
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_Amphioxus_ the reverse is the case; (b) the tongue-bar contains a large coelomic space in _Balanoglossus_, but is solid in _Amphioxus_; (c) the skeletal rods in the tongue-bars of _Balanoglossus_ are double; (d) the tongue-bar in _Balanoglossus_ does not fuse with the ventral border of the cleft, but ends freely below, thus producing a continuous U-shaped cleft.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various
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From serving primitively as the essential organ of the cleft the tongue-bar may have undergone reduction and modification, becoming a secondary bar in
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various
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The chief differences are, that (a) the tongue-bar is the essential organ of the gill-slit in _Balanoglossus_, and exceeds the septal bars in bulk, while in
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various
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