 The Welsh naturalist Thomas Pennant made the next published illustration, and included an account of the antelope, calling it "blue goat", in his 1771 Synopsis of Quadrupeds, based on a skin from the Cape of Good Hope, purchased from Amsterdam. In 1778 a drawing by the Swiss-Dutch natural philosopher Jean-Nicolas-Sébastien Allamand was included in Comte de Buffon's Histoire Naturelle; however, he called the antelope tzeiran, the Siberian name for the goitered gazelle (Gazella subgutturosa). The illustration is widely believed to be based on the specimen in Leiden. This drawing is the first published illustration that shows the entire animal. Another record of the bluebuck appears in the travel memoirs of French explorer François Levaillant, published in the 1780s, describing his quest to discover the land to the east of the Cape of Good Hope, "Hottentots Holland". The German zoologist Martin Lichtenstein wrote about the bluebuck in 1812, but the species was mentioned less frequently in subsequent literature.
