玉螺屬
Natica \Nat"i*ca\, n.; pl. {Naticas}, L. {Natic[AE]} (-s[=e]). (Zo["o]l.) Any one of numerous species of marine gastropods belonging to {Natica}, {Lunatia}, {Neverita}, and other allied genera (family {Naticid[ae]}.) They burrow beneath the sand, or mud, and drill other shells.