Note 6 — Chapter XIX

Briefly characterized by Mr. Gray in the Zoological Miscellany, from a specimen badly stuffed; from which cause one of its most important characters (the rounded tail, compared to the flattened one of the aquatic kind) was overlooked. Captain FitzRoy has presented some fine specimens of both species to the British Museum. I cannot omit here returning my thanks to Mr. Gray, for the kind manner in which he has afforded me every facility as often as I have visited the British Museum.