Jávorka Sándor - Soós Lajos (szerk.): A Magyar Természettudományi Múzeum évkönyve 29. (Budapest 1935)

Anghy, Cs. G.: On a prepared specimen resembling Equus zebra Frederici Trouess. from the collection of the Stuttgart "Naturaliensammlung"

light and dark yellow, or between light and dark cream — possesses some systematical importance only in the case of the Burchell-tigerhorses. As of no systematical importance is to be valued — in the case of the mountain zebra — the colour of the nostril patch, the number of the vertical stripes, the black or brownish colour of the dark stripes, the number of the frontal stripes, etc. The Equus zebra Hartmannae differs from E. z. zebra in having thinner diagonal and vertical stripes. Equus zebra Frederici TitouESS. Thus E. z. Frederici differs, really, from Equus z. zebra, and E. z, Hartmannae only in having several thoracal main stripesj reaching as far as the ventral longitudinal middle line. The number of these stripes is four both on the specimen of the Warsaw museum and CUVIER'S figure. The number four is not to be regarded, however, as a fixed character of the Frederici zebra. Not the number of the stripes is characteristic of this form, but the circumstance that the vertical stripes of the mountain zebra (E. z. zebra) never reach the ventral middle line. Since this form of the vertical stripes is to be looked upon as an absolut character of the Frederici zebra, the specimen of the Stuttgart museum which I had the opportunity to study on the very spot, and labelled: „Equus zebra <$ ad. von Transvaal. Südafrica. Präpariert von F. Kerz 1887." is to be regarded as a representative of E. z. Frederici.