rough (also smooth) hound: Large and Small Spotted Dogfish; nurse hound: Scyllium stellaris; white hound: the Penny or Miller's Dog, Galeus canis.extracted from houndn.1
smooth hound
smooth houndn. (see quot.).
ΚΠ
1603 G. OwenDescr. Penbrokshire (1891) 123 [In list of Fish] Roughe hounds, smothe houndes.
1769 T. PennantBrit. Zool. (new ed.) III. iv. 91 The Smooth Hound..is called smooth, not that the skin is really so, but because it wants the spines on the back.