What is "agaphelus gibbosus"

Scrag \Scrag\ (skr[a^]g), n. [Cf. dial. Sw. skraka a great dry tree, a long, lean man, Gael. sgreagach dry, shriveled, rocky. See Shrink, and cf. Scrog, Shrag, n.]

1. Something thin, lean, or rough; a bony piece; especially, a bony neckpiece of meat; hence, humorously or in contempt, the neck.

   Lady MacScrew, who . . . serves up a scrag of mutton on silver.
   --Thackeray.

2. A rawboned person. [Low]
   --Halliwell.

3. A ragged, stunted tree or branch.

   Scrag whale (Zo["o]l.), a North Atlantic whalebone whale ( Agaphelus gibbosus). By some it is considered the young of the right whale.