sentences:  This may be part of the reason why it is so difficult to positively identify and confirm wild sightings of this species.The species became known to Western science in 1873, when John Edward Gray, the turtle expert at the British Museum, described the specimen sent to him from Shanghai by English biologist Robert Swinhoe.He named the species "Oscaria swinhoei", and described it as "the most beautiful species of Trionychidae that has yet occurred."