马蹄蟹
鲎

[ noun ]
large marine arthropod of the Atlantic coast of North America having a domed carapace that is shaped like a horseshoe and a stiff pointed tail; a living fossil related to the wood louse
<noun.animal>

Limulus \Lim"u*lus\ (l[i^]m"[-u]*l[u^]s), n.; pl. {Limuli}
(-l[imac]). [L., dim. of limus sidelong, askance.] (Zo["o]l.)
The only existing genus of Merostomata. It includes only a
few species from the East Indies, and one ({Limulus
polyphemus}) from the Atlantic coast of North America. Called
also {Molucca crab}, {king crab}, {horseshoe crab}, and
{horsefoot}.