- There are certain groups of fish, however, whose family traits are so marked as to render it almost impossible to mistake even their portraits, and hence I may venture, without fear of being far wrong, upon a few remarks as to the general features of the ichthyological fauna of Ceylon. - "Sketches of the Natural History of Ceylon", J. Emerson Tennent.
- Having by permission of the Director of the Museum one of the finest collections of fossils in Germany at my disposition, and being also allowed to take the specimens home as I need them, I have undertaken to publish the ichthyological part of the collection. - "Louis Agassiz: His Life and Correspondence", Louis Agassiz.
- Then comes the continuation of the description of the Ganoids and the Scomberoids, and an additional sheet contains a sketch of my ichthyological classification. - "Louis Agassiz: His Life and Correspondence", Louis Agassiz.