P. princeps may refer to: Phidippus princeps, a jumping spider species in the genus Phidippus found in the United States and Canada Plantago princeps, the ale, a flowering plant species endemic to Hawaii Pleuroploca princeps, a sea snail species Ploceus princeps, the Príncipe weaver, a bird species endemic to São Tomé and Príncipe Pseudolimnophila princeps, a crane fly species in the genus Pseudolimnophila Psilophyton princeps, an extinct vascular plant species
Synonyms Passerculus princeps, a synonym for Passerculus sandwichensis, the Savannah sparrow, a bird species found in America Pirimela princeps, a synonym for Pirimela denticulata, a crab species found from the British Isles to Mauritania, the Mediterranean Sea, the Canary Islands, the Cape Verde Islands and the Azores