Note: Do not rely on this information. It is very old.
Macrura, a group of Crustaceans (order Decapoda) containing the lobster, shrimp, prawn, etc. The abdomen is covered with a hard shell.
“Did Christ love you without any motive to draw His love, then will you not love Christ, in whom there are so many motives to draw your love?”
–Thomas Vincent, The True Christian's Love to the Unseen Christ