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Went northwards, wading across two miles of flooded flats on to which the Clarias Capensis, a species of siluris, comes to forage out of the river. We had the Likindazi, a sedgy stream, with hippopotami, on our right. Slept in forest without seeing anyone. Then next day we met with a party who had come from their village to look for us.

Again, we have similar phenomena in that almost exclusively fresh-water group the Siluroids. Thus the genera Clarias and Heterobranchus are found both in Africa and the East Indies. Plotosus is found in Africa, India, and Australia, and the species P. anguillaris has been brought from both China and Moreton Bay. Here, therefore, we have the same species in two distinct geographical regions.

While the crops are growing, large quantities of fish are caught, chiefly Clarias capensis, and Mugil Africanus; they are dried for sale or future consumption. As we ascended, we passed a deep stream about thirty yards wide, flowing in from a body of open water several miles broad.

Great numbers of Siluridae, chiefly Clarias Capensis, often three feet in length, spread over the flooded portions of the country, eating the young of other fishes, and insects, lizards, and worms, killed by the waters. The people make weirs for them, and as the waters retire kill large numbers, which they use as a relish to their farinaceous food. 16th January, 1868.

Like most lophoid fishes, it has the power of retaining a large quantity of water in a part of its great head, so that it can leave the river, and even be buried in the mud of dried-up pools, without being destroyed. Another fish closely resembling this, and named 'Clarias capensis' by Dr.