This beautiful species, which is sufficiently characterised to distinguish it from every other individual of the class, is copiously produced in Dutch Guiana, about 300 paces from the sea, and nearly as far from the left bank of the river of Surinam. It was communicated to me by the elder Vaillant,[N 1] who discovered it in 1755 on some raised ground which was never overflowed by the highest tides,