1) Defalcator 2) Embezzler 3) Stealer 4) Thief 1) Defalcator 2) Embezzler 3) Thief 
[gastropod] Peculator is a genus of sea snails, marine gastropod molluscs in the family Volutomitridae, one family of mitres. Species within the genus Peculator include: ...
• (n.) One who peculates.
Pec'u·la`tor noun [ Latin ] One who peculates. ' Peculators of the public gold.' Cowper. 
peculator 1. Someone who peculates or who embezzles public funds or public property. 2. Derived from Latin peculatus, past participle of peculari, 'to embezzle public money', from peculium, 'private property'; literally, 'property in cattle' which represented 'wealth'.