After the death of John Edward Gray in 1875, Günther was appointed Keeper of Zoology at the Natural History Museum, a position he held until 1895.
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His mother moved to England and when he visited it in 1855, he met John Edward Gray and Prof. Owen at the British Museum.
This species was first mentioned by John Edward Gray in 1840 in the Annals and Magazine of Natural History as Asterias multiradiata and later as Heliaster multiradiatus.
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The second specimen, a complete skull sent from the Seychelles by a M. Leduc in 1839, was named Ziphius seychellensis by the English zoologist John Edward Gray in 1846; the French scientist Paul Gervais later placed this specimen in the genus Dioplodon ("two-toothed").
A snail, Amoria jamrachi, was named after Jamrach by John Edward Gray, keeper of zoology at the British Museum, to whom Jamrach had forwarded the shell after he obtained it.
As varieties Severtzov lists Felis nipalensis described by Thomas Horsfield and Nicholas Aylward Vigors, Leopardus Elliotti, Leopardus Horsfieldi and Leopardus chinensis described by John Edward Gray, and Felis bengalensis described by Anselme Gaëtan Desmarest.
The animal was first described by Dr J. E. Gray in 1865 from a specimen in the British Museum collected from Santa Cruz de la Sierra in eastern Bolivia as Dasypus vellerosus.