Chapter II: Introduction

Ever since Dr. Hartert[1] came to Tring, twenty-nine years ago, I have been keenly interested in the isolated mountains of Asben or Aïr in the middle of the Sahara, and the country surrounding them. This was chiefly owing to Dr. Hartert’s account of his interview with some Tuareg traders who had come down into Nigeria to sell salt. This interest was intensified by our own explorations in Algeria and “Les Territoires du Sud,” and Geyr von Schweppenburg and Spatz’s journeys in the Ahaggar Mountains, all of which yielded many zoological treasures. Therefore, Dr. Hartert and I felt much satisfaction when, after his strenuous labours in the war in East Africa, Captain Angus Buchanan fell in with our views and undertook to explore Asben and the country between it and Kano, in North Nigeria, the terminus of the new railway. The eleven months occupied in the undertaking have proved most fruitful, for, besides the interesting ethnological and other facts recorded in the subsequent pages of this book, the zoological results have been most valuable. These latter results have been published in _Novitates Zoologicæ_, the journal of the Tring Museum, in a series of articles by Messrs. O. Thomas and M. A. C. Hinton,[2] Dr. Hartert and myself.

The number of new species and sub-species is very large, especially among the Mammals; Mr. Thomas indeed says that he has never known a collection of Mammals, from a limited area such as this, with so large a proportion of novelties. Among the new Mammals, the most interesting are undoubtedly the “Gundi” (_Massoutiera_), the Rock-Dassy (_Procavia_), and the “Mouflon” (_Ammotragus_), because of the immense stretches of desert which separate them from allied species and sub-species.

Among the Birds, one of the most interesting is the beautiful goatsucker (_Caprimulgus eximius simplicior_), for, although a slightly different subspecies, it illustrates once more the fact that many species inhabit a belt south of the Sahara from N.E. Africa across the African Continent to West Africa, while most of the forms north and south of that belt do not show such a wide range from east to west.

Among the Lepidoptera, the most interesting species are all true “desert” forms, with a wide range reaching through Arabia into India, although several new species and sub-species of butterflies and moths of great interest are also in the collection.

From a zoo-geographical point of view the collection is most valuable, for we now know zoologically a complete section of the “Great Saharan Desert,” with the exception of the small portion between the Ahaggar Mountains and Asben, and although the region of the Sahara south of the former is undoubtedly tropical, and not palæarctic, in its fauna, it is very remarkable what a large number of palæarctic species and genera are still to be found there. Unlike most of the collecting-grounds of the Old World, which can still yield new and undescribed forms, Asben and its neighbourhood were absolutely virgin soil zoologically, and Captain Buchanan’s specimens are the first to reach the hands of scientific workers. Considering the long journey by camel and the fact that Captain Buchanan was working absolutely single-handed, the collecting of over 1,100 Birds and Mammals and over 2,000 Lepidoptera, in a region notorious for its paucity, both of species and individuals, is a remarkable achievement, and proves him to be a most efficient explorer and naturalist.

ROTHSCHILD.

TRING MUSEUM,
_March 22nd_, 1921.

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