PAINTINGS - (a) WEST AFRICAN HUMPBACK DOLPHIN & (b) TUCUXI

WEST AFRICAN HUMPBACK DOLPHIN (Souza teuszii)
Very closely related to the Indo-Pacific species, this animal is found only in West African waters, and this geographical isolation has been responsible for its designation as a distinct species. Because of confusion in the earliest descriptions of this species, it was believed to be the only vegetarian dolphin. It now appears that the seeds and grass that were thought to have been found in the stomach of the specimen described in `1892 were actually from the stomach of a manatee that had been caught at the same time. We now know that this species feeds on fish, as do most other dolphins.
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TUCUXI (Sotalia fluviatilis)
Because it is a nondescript little dolphin from a part of the world rarely visited by travelers, the tucuxi (named for an Indian word) is one of the least-known dolphins. There is some confusion as to how many species of Sotalia there are, since its range includes most of the rivers and lakes of northern South America (fluviatilis comes from the Latin for "river"), as well as the coastal waters of Venequela, Cuyana, and Surinam. In 1965 an expedition from the Steinhart Aquarium in San Francisco collected several of these, but they [proved to be too delicate, and died.
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