glass-crab

from The Collaborative International Dictionary of English v.0.48

Glass-crab \Glass"-crab`\, n. (Zool.)
   The larval state ({Phyllosoma}) of the genus {Palinurus} and
   allied genera. It is remarkable for its strange outlines,
   thinness, and transparency. See {Phyllosoma}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Phyllosoma \Phyl`lo*so"ma\ (f[i^]l`l[-o]*s[=o]"m[.a]), n. [NL.
   See {Phyllo-}, and {-some} body.] (Zool.)
   The larva of the spiny lobsters ({Palinurus} and allied
   genera). Its body is remarkably thin, flat, and transparent;
   the legs are very long. Called also {glass-crab}, and
   {glass-shrimp}.
   [1913 Webster]