Callinectes

Callinectes
Callinectes sapidus
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Portunidae
Subfamily: Portuninae
Genus: Callinectes
Stimpson, 1860 

Callinectes is a genus of crabs containing species such as the Atlantic blue crab C. sapidus.