Keywords: Pisidium punctiferum.png of a new freshwater bivalve found in Trinidad Annals and Magazine of Natural History London 3 19 http //www archive org/stream/s3annalsmagazine19londuoft page/160/mode/2up/ 160-161 Cropped and retouched from the page 160 1867 Robert John Lechmere Guppy 1836-1916 PD-old-70 Pisidium Images from Annals and Magazine of Natural History |