Puppis

Puppis (abbreviated Pup) is a constellation (comprising 313 naked-eye stars) in the Southern Hemisphere near Canis Major and Pyxis; its name is Latin for the 'poop deck' on a ship.

It was originally part of the obsolete constellation Argo Navis, the Ship Argo, which was so large it was eventually split into four parts, the others being Carina, Vela and Malus, which later became Pyxis.